20931540

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1$

素因数の和:142

約数の個数: 192

約数和(自身を含む): 73328640

約数和(自身を除く): 52397100

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 19, 20, 21, 28, 30, 35, 38, 42, 43, 57, 60, 61, 70, 76, 84, 86, 95, 105, 114, 122, 129, 133, 140, 172, 183, 190, 210, 215, 228, 244, 258, 266, 285, 301, 305, 366, 380, 399, 420, 427, 430, 516, 532, 570, 602, 610, 645, 665, 732, 798, 817, 854, 860, 903, 915, 1140, 1159, 1204, 1220, 1281, 1290, 1330, 1505, 1596, 1634, 1708, 1806, 1830, 1995, 2135, 2318, 2451, 2562, 2580, 2623, 2660, 3010, 3268, 3477, 3612, 3660, 3990, 4085, 4270, 4515, 4636, 4902, 5124, 5246, 5719, 5795, 6020, 6405, 6954, 7869, 7980, 8113, 8170, 8540, 9030, 9804, 10492, 11438, 11590, 12255, 12810, 13115, 13908, 15738, 16226, 16340, 17157, 17385, 18060, 18361, 22876, 23180, 24339, 24510, 25620, 26230, 28595, 31476, 32452, 34314, 34770, 36722, 39345, 40565, 48678, 49020, 49837, 52460, 55083, 57190, 68628, 69540, 73444, 78690, 81130, 85785, 91805, 97356, 99674, 110166, 114380, 121695, 149511, 157380, 162260, 171570, 183610, 199348, 220332, 243390, 249185, 275415, 299022, 343140, 348859, 367220, 486780, 498370, 550830, 598044, 697718, 747555, 996740, 1046577, 1101660, 1395436, 1495110, 1744295, 2093154, 2990220, 3488590, 4186308, 5232885, 6977180, 10465770, 20931540]

約数ペア:

[(1, 20931540), (2, 10465770), (3, 6977180), (4, 5232885), (5, 4186308), (6, 3488590), (7, 2990220), (10, 2093154), (12, 1744295), (14, 1495110), (15, 1395436), (19, 1101660), (20, 1046577), (21, 996740), (28, 747555), (30, 697718), (35, 598044), (38, 550830), (42, 498370), (43, 486780), (57, 367220), (60, 348859), (61, 343140), (70, 299022), (76, 275415), (84, 249185), (86, 243390), (95, 220332), (105, 199348), (114, 183610), (122, 171570), (129, 162260), (133, 157380), (140, 149511), (172, 121695), (183, 114380), (190, 110166), (210, 99674), (215, 97356), (228, 91805), (244, 85785), (258, 81130), (266, 78690), (285, 73444), (301, 69540), (305, 68628), (366, 57190), (380, 55083), (399, 52460), (420, 49837), (427, 49020), (430, 48678), (516, 40565), (532, 39345), (570, 36722), (602, 34770), (610, 34314), (645, 32452), (665, 31476), (732, 28595), (798, 26230), (817, 25620), (854, 24510), (860, 24339), (903, 23180), (915, 22876), (1140, 18361), (1159, 18060), (1204, 17385), (1220, 17157), (1281, 16340), (1290, 16226), (1330, 15738), (1505, 13908), (1596, 13115), (1634, 12810), (1708, 12255), (1806, 11590), (1830, 11438), (1995, 10492), (2135, 9804), (2318, 9030), (2451, 8540), (2562, 8170), (2580, 8113), (2623, 7980), (2660, 7869), (3010, 6954), (3268, 6405), (3477, 6020), (3612, 5795), (3660, 5719), (3990, 5246), (4085, 5124), (4270, 4902), (4515, 4636)]