20874490

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{113}}^1$

素因数の和:176

約数の個数: 96

約数和(自身を含む): 49124880

約数和(自身を除く): 28250390

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 29, 35, 49, 58, 65, 70, 91, 98, 113, 130, 145, 182, 203, 226, 245, 290, 377, 406, 455, 490, 565, 637, 754, 791, 910, 1015, 1130, 1274, 1421, 1469, 1582, 1885, 2030, 2639, 2842, 2938, 3185, 3277, 3770, 3955, 5278, 5537, 6370, 6554, 7105, 7345, 7910, 10283, 11074, 13195, 14210, 14690, 16385, 18473, 20566, 22939, 26390, 27685, 32770, 36946, 42601, 45878, 51415, 55370, 71981, 85202, 92365, 102830, 114695, 143962, 160573, 184730, 213005, 229390, 298207, 321146, 359905, 426010, 596414, 719810, 802865, 1491035, 1605730, 2087449, 2982070, 4174898, 10437245, 20874490]

約数ペア:

[(1, 20874490), (2, 10437245), (5, 4174898), (7, 2982070), (10, 2087449), (13, 1605730), (14, 1491035), (26, 802865), (29, 719810), (35, 596414), (49, 426010), (58, 359905), (65, 321146), (70, 298207), (91, 229390), (98, 213005), (113, 184730), (130, 160573), (145, 143962), (182, 114695), (203, 102830), (226, 92365), (245, 85202), (290, 71981), (377, 55370), (406, 51415), (455, 45878), (490, 42601), (565, 36946), (637, 32770), (754, 27685), (791, 26390), (910, 22939), (1015, 20566), (1130, 18473), (1274, 16385), (1421, 14690), (1469, 14210), (1582, 13195), (1885, 11074), (2030, 10283), (2639, 7910), (2842, 7345), (2938, 7105), (3185, 6554), (3277, 6370), (3770, 5537), (3955, 5278)]