18939960

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1$

素因数の和:123

約数の個数: 256

約数和(自身を含む): 72576000

約数和(自身を除く): 53636040

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 19, 20, 24, 26, 27, 30, 36, 38, 39, 40, 45, 52, 54, 57, 60, 65, 71, 72, 76, 78, 90, 95, 104, 108, 114, 117, 120, 130, 135, 142, 152, 156, 171, 180, 190, 195, 213, 216, 228, 234, 247, 260, 270, 284, 285, 312, 342, 351, 355, 360, 380, 390, 426, 456, 468, 494, 513, 520, 540, 568, 570, 585, 639, 684, 702, 710, 741, 760, 780, 852, 855, 923, 936, 988, 1026, 1065, 1080, 1140, 1170, 1235, 1278, 1349, 1368, 1404, 1420, 1482, 1560, 1704, 1710, 1755, 1846, 1917, 1976, 2052, 2130, 2223, 2280, 2340, 2470, 2556, 2565, 2698, 2769, 2808, 2840, 2964, 3195, 3420, 3510, 3692, 3705, 3834, 4047, 4104, 4260, 4446, 4615, 4680, 4940, 5112, 5130, 5396, 5538, 5928, 6390, 6669, 6745, 6840, 7020, 7384, 7410, 7668, 8094, 8307, 8520, 8892, 9230, 9585, 9880, 10260, 10792, 11076, 11115, 12141, 12780, 13338, 13490, 13845, 14040, 14820, 15336, 16188, 16614, 17537, 17784, 18460, 19170, 20235, 20520, 22152, 22230, 24282, 24921, 25560, 26676, 26980, 27690, 29640, 32376, 33228, 33345, 35074, 36423, 36920, 38340, 40470, 41535, 44460, 48564, 49842, 52611, 53352, 53960, 55380, 60705, 66456, 66690, 70148, 72846, 76680, 80940, 83070, 87685, 88920, 97128, 99684, 105222, 110760, 121410, 124605, 133380, 140296, 145692, 157833, 161880, 166140, 175370, 182115, 199368, 210444, 242820, 249210, 263055, 266760, 291384, 315666, 332280, 350740, 364230, 420888, 473499, 485640, 498420, 526110, 631332, 701480, 728460, 789165, 946998, 996840, 1052220, 1262664, 1456920, 1578330, 1893996, 2104440, 2367495, 3156660, 3787992, 4734990, 6313320, 9469980, 18939960]

約数ペア:

[(1, 18939960), (2, 9469980), (3, 6313320), (4, 4734990), (5, 3787992), (6, 3156660), (8, 2367495), (9, 2104440), (10, 1893996), (12, 1578330), (13, 1456920), (15, 1262664), (18, 1052220), (19, 996840), (20, 946998), (24, 789165), (26, 728460), (27, 701480), (30, 631332), (36, 526110), (38, 498420), (39, 485640), (40, 473499), (45, 420888), (52, 364230), (54, 350740), (57, 332280), (60, 315666), (65, 291384), (71, 266760), (72, 263055), (76, 249210), (78, 242820), (90, 210444), (95, 199368), (104, 182115), (108, 175370), (114, 166140), (117, 161880), (120, 157833), (130, 145692), (135, 140296), (142, 133380), (152, 124605), (156, 121410), (171, 110760), (180, 105222), (190, 99684), (195, 97128), (213, 88920), (216, 87685), (228, 83070), (234, 80940), (247, 76680), (260, 72846), (270, 70148), (284, 66690), (285, 66456), (312, 60705), (342, 55380), (351, 53960), (355, 53352), (360, 52611), (380, 49842), (390, 48564), (426, 44460), (456, 41535), (468, 40470), (494, 38340), (513, 36920), (520, 36423), (540, 35074), (568, 33345), (570, 33228), (585, 32376), (639, 29640), (684, 27690), (702, 26980), (710, 26676), (741, 25560), (760, 24921), (780, 24282), (852, 22230), (855, 22152), (923, 20520), (936, 20235), (988, 19170), (1026, 18460), (1065, 17784), (1080, 17537), (1140, 16614), (1170, 16188), (1235, 15336), (1278, 14820), (1349, 14040), (1368, 13845), (1404, 13490), (1420, 13338), (1482, 12780), (1560, 12141), (1704, 11115), (1710, 11076), (1755, 10792), (1846, 10260), (1917, 9880), (1976, 9585), (2052, 9230), (2130, 8892), (2223, 8520), (2280, 8307), (2340, 8094), (2470, 7668), (2556, 7410), (2565, 7384), (2698, 7020), (2769, 6840), (2808, 6745), (2840, 6669), (2964, 6390), (3195, 5928), (3420, 5538), (3510, 5396), (3692, 5130), (3705, 5112), (3834, 4940), (4047, 4680), (4104, 4615), (4260, 4446)]