81258580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{829}}^1$

素因数の和:893

約数の個数: 72

約数和(自身を含む): 191381400

約数和(自身を除く): 110122820

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 29, 52, 58, 65, 116, 130, 145, 169, 260, 290, 338, 377, 580, 676, 754, 829, 845, 1508, 1658, 1690, 1885, 3316, 3380, 3770, 4145, 4901, 7540, 8290, 9802, 10777, 16580, 19604, 21554, 24041, 24505, 43108, 48082, 49010, 53885, 96164, 98020, 107770, 120205, 140101, 215540, 240410, 280202, 312533, 480820, 560404, 625066, 700505, 1250132, 1401010, 1562665, 2802020, 3125330, 4062929, 6250660, 8125858, 16251716, 20314645, 40629290, 81258580]

約数ペア:

[(1, 81258580), (2, 40629290), (4, 20314645), (5, 16251716), (10, 8125858), (13, 6250660), (20, 4062929), (26, 3125330), (29, 2802020), (52, 1562665), (58, 1401010), (65, 1250132), (116, 700505), (130, 625066), (145, 560404), (169, 480820), (260, 312533), (290, 280202), (338, 240410), (377, 215540), (580, 140101), (676, 120205), (754, 107770), (829, 98020), (845, 96164), (1508, 53885), (1658, 49010), (1690, 48082), (1885, 43108), (3316, 24505), (3380, 24041), (3770, 21554), (4145, 19604), (4901, 16580), (7540, 10777), (8290, 9802)]