20721286908

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{1347989}}^1$

素因数の和:1348067

約数の個数: 72

約数和(自身を含む): 60842876640

約数和(自身を除く): 40121589732

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 61, 63, 84, 122, 126, 183, 244, 252, 366, 427, 549, 732, 854, 1098, 1281, 1708, 2196, 2562, 3843, 5124, 7686, 15372, 1347989, 2695978, 4043967, 5391956, 8087934, 9435923, 12131901, 16175868, 18871846, 24263802, 28307769, 37743692, 48527604, 56615538, 82227329, 84923307, 113231076, 164454658, 169846614, 246681987, 328909316, 339693228, 493363974, 575591303, 740045961, 986727948, 1151182606, 1480091922, 1726773909, 2302365212, 2960183844, 3453547818, 5180321727, 6907095636, 10360643454, 20721286908]

約数ペア:

[(1, 20721286908), (2, 10360643454), (3, 6907095636), (4, 5180321727), (6, 3453547818), (7, 2960183844), (9, 2302365212), (12, 1726773909), (14, 1480091922), (18, 1151182606), (21, 986727948), (28, 740045961), (36, 575591303), (42, 493363974), (61, 339693228), (63, 328909316), (84, 246681987), (122, 169846614), (126, 164454658), (183, 113231076), (244, 84923307), (252, 82227329), (366, 56615538), (427, 48527604), (549, 37743692), (732, 28307769), (854, 24263802), (1098, 18871846), (1281, 16175868), (1708, 12131901), (2196, 9435923), (2562, 8087934), (3843, 5391956), (5124, 4043967), (7686, 2695978), (15372, 1347989)]