21291363925

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{23}}^2\times {\mathrm{59}}^1\times {\mathrm{2099}}^1$

素因数の和:2227

約数の個数: 72

約数和(自身を含む): 30240252000

約数和(自身を除く): 8948888075

約数列:

[1, 5, 13, 23, 25, 59, 65, 115, 295, 299, 325, 529, 575, 767, 1357, 1475, 1495, 2099, 2645, 3835, 6785, 6877, 7475, 10495, 13225, 17641, 19175, 27287, 31211, 33925, 34385, 48277, 52475, 88205, 123841, 136435, 156055, 171925, 241385, 405743, 441025, 619205, 627601, 682175, 780275, 1110371, 1206925, 1609933, 2028715, 2848343, 3096025, 3138005, 5551855, 8049665, 10143575, 14241715, 14434823, 15690025, 27759275, 37028459, 40248325, 65511889, 71208575, 72174115, 185142295, 327559445, 360870575, 851654557, 925711475, 1637797225, 4258272785, 21291363925]

約数ペア:

[(1, 21291363925), (5, 4258272785), (13, 1637797225), (23, 925711475), (25, 851654557), (59, 360870575), (65, 327559445), (115, 185142295), (295, 72174115), (299, 71208575), (325, 65511889), (529, 40248325), (575, 37028459), (767, 27759275), (1357, 15690025), (1475, 14434823), (1495, 14241715), (2099, 10143575), (2645, 8049665), (3835, 5551855), (6785, 3138005), (6877, 3096025), (7475, 2848343), (10495, 2028715), (13225, 1609933), (17641, 1206925), (19175, 1110371), (27287, 780275), (31211, 682175), (33925, 627601), (34385, 619205), (48277, 441025), (52475, 405743), (88205, 241385), (123841, 171925), (136435, 156055)]