28409940

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1$

素因数の和:124

約数の個数: 240

約数和(自身を含む): 102453120

約数和(自身を除く): 74043180

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 19, 20, 26, 27, 30, 36, 38, 39, 45, 52, 54, 57, 60, 65, 71, 76, 78, 81, 90, 95, 108, 114, 117, 130, 135, 142, 156, 162, 171, 180, 190, 195, 213, 228, 234, 247, 260, 270, 284, 285, 324, 342, 351, 355, 380, 390, 405, 426, 468, 494, 513, 540, 570, 585, 639, 684, 702, 710, 741, 780, 810, 852, 855, 923, 988, 1026, 1053, 1065, 1140, 1170, 1235, 1278, 1349, 1404, 1420, 1482, 1539, 1620, 1710, 1755, 1846, 1917, 2052, 2106, 2130, 2223, 2340, 2470, 2556, 2565, 2698, 2769, 2964, 3078, 3195, 3420, 3510, 3692, 3705, 3834, 4047, 4212, 4260, 4446, 4615, 4940, 5130, 5265, 5396, 5538, 5751, 6156, 6390, 6669, 6745, 7020, 7410, 7668, 7695, 8094, 8307, 8892, 9230, 9585, 10260, 10530, 11076, 11115, 11502, 12141, 12780, 13338, 13490, 13845, 14820, 15390, 16188, 16614, 17537, 18460, 19170, 20007, 20235, 21060, 22230, 23004, 24282, 24921, 26676, 26980, 27690, 28755, 30780, 33228, 33345, 35074, 36423, 38340, 40014, 40470, 41535, 44460, 48564, 49842, 52611, 55380, 57510, 60705, 66690, 70148, 72846, 74763, 80028, 80940, 83070, 87685, 99684, 100035, 105222, 109269, 115020, 121410, 124605, 133380, 145692, 149526, 157833, 166140, 175370, 182115, 200070, 210444, 218538, 242820, 249210, 263055, 299052, 315666, 350740, 364230, 373815, 400140, 437076, 473499, 498420, 526110, 546345, 631332, 728460, 747630, 789165, 946998, 1052220, 1092690, 1420497, 1495260, 1578330, 1893996, 2185380, 2367495, 2840994, 3156660, 4734990, 5681988, 7102485, 9469980, 14204970, 28409940]

約数ペア:

[(1, 28409940), (2, 14204970), (3, 9469980), (4, 7102485), (5, 5681988), (6, 4734990), (9, 3156660), (10, 2840994), (12, 2367495), (13, 2185380), (15, 1893996), (18, 1578330), (19, 1495260), (20, 1420497), (26, 1092690), (27, 1052220), (30, 946998), (36, 789165), (38, 747630), (39, 728460), (45, 631332), (52, 546345), (54, 526110), (57, 498420), (60, 473499), (65, 437076), (71, 400140), (76, 373815), (78, 364230), (81, 350740), (90, 315666), (95, 299052), (108, 263055), (114, 249210), (117, 242820), (130, 218538), (135, 210444), (142, 200070), (156, 182115), (162, 175370), (171, 166140), (180, 157833), (190, 149526), (195, 145692), (213, 133380), (228, 124605), (234, 121410), (247, 115020), (260, 109269), (270, 105222), (284, 100035), (285, 99684), (324, 87685), (342, 83070), (351, 80940), (355, 80028), (380, 74763), (390, 72846), (405, 70148), (426, 66690), (468, 60705), (494, 57510), (513, 55380), (540, 52611), (570, 49842), (585, 48564), (639, 44460), (684, 41535), (702, 40470), (710, 40014), (741, 38340), (780, 36423), (810, 35074), (852, 33345), (855, 33228), (923, 30780), (988, 28755), (1026, 27690), (1053, 26980), (1065, 26676), (1140, 24921), (1170, 24282), (1235, 23004), (1278, 22230), (1349, 21060), (1404, 20235), (1420, 20007), (1482, 19170), (1539, 18460), (1620, 17537), (1710, 16614), (1755, 16188), (1846, 15390), (1917, 14820), (2052, 13845), (2106, 13490), (2130, 13338), (2223, 12780), (2340, 12141), (2470, 11502), (2556, 11115), (2565, 11076), (2698, 10530), (2769, 10260), (2964, 9585), (3078, 9230), (3195, 8892), (3420, 8307), (3510, 8094), (3692, 7695), (3705, 7668), (3834, 7410), (4047, 7020), (4212, 6745), (4260, 6669), (4446, 6390), (4615, 6156), (4940, 5751), (5130, 5538), (5265, 5396)]