256424715

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{3911}}^1$

素因数の和:4000

約数の個数: 48

約数和(自身を含む): 468688896

約数和(自身を除く): 212264181

約数列:

[1, 3, 5, 9, 15, 31, 45, 47, 93, 141, 155, 235, 279, 423, 465, 705, 1395, 1457, 2115, 3911, 4371, 7285, 11733, 13113, 19555, 21855, 35199, 58665, 65565, 121241, 175995, 183817, 363723, 551451, 606205, 919085, 1091169, 1654353, 1818615, 2757255, 5455845, 5698327, 8271765, 17094981, 28491635, 51284943, 85474905, 256424715]

約数ペア:

[(1, 256424715), (3, 85474905), (5, 51284943), (9, 28491635), (15, 17094981), (31, 8271765), (45, 5698327), (47, 5455845), (93, 2757255), (141, 1818615), (155, 1654353), (235, 1091169), (279, 919085), (423, 606205), (465, 551451), (705, 363723), (1395, 183817), (1457, 175995), (2115, 121241), (3911, 65565), (4371, 58665), (7285, 35199), (11733, 21855), (13113, 19555)]