1261357882850

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{11981}}^1\times {\mathrm{161969}}^1$

素因数の和:173975

約数の個数: 48

約数和(自身を含む): 2526823351080

約数和(自身を除く): 1265465468230

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 325, 650, 11981, 23962, 59905, 119810, 155753, 161969, 299525, 311506, 323938, 599050, 778765, 809845, 1557530, 1619690, 2105597, 3893825, 4049225, 4211194, 7787650, 8098450, 10527985, 21055970, 52639925, 105279850, 1940550589, 3881101178, 9702752945, 19405505890, 25227157657, 48513764725, 50454315314, 97027529450, 126135788285, 252271576570, 630678941425, 1261357882850]

約数ペア:

[(1, 1261357882850), (2, 630678941425), (5, 252271576570), (10, 126135788285), (13, 97027529450), (25, 50454315314), (26, 48513764725), (50, 25227157657), (65, 19405505890), (130, 9702752945), (325, 3881101178), (650, 1940550589), (11981, 105279850), (23962, 52639925), (59905, 21055970), (119810, 10527985), (155753, 8098450), (161969, 7787650), (299525, 4211194), (311506, 4049225), (323938, 3893825), (599050, 2105597), (778765, 1619690), (809845, 1557530)]