217874975

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{719}}^1$

素因数の和:800

約数の個数: 48

約数和(自身を含む): 308551680

約数和(自身を除く): 90676705

約数列:

[1, 5, 17, 23, 25, 31, 85, 115, 155, 391, 425, 527, 575, 713, 719, 775, 1955, 2635, 3565, 3595, 9775, 12121, 12223, 13175, 16537, 17825, 17975, 22289, 60605, 61115, 82685, 111445, 281129, 303025, 305575, 378913, 413425, 512647, 557225, 1405645, 1894565, 2563235, 7028225, 8714999, 9472825, 12816175, 43574995, 217874975]

約数ペア:

[(1, 217874975), (5, 43574995), (17, 12816175), (23, 9472825), (25, 8714999), (31, 7028225), (85, 2563235), (115, 1894565), (155, 1405645), (391, 557225), (425, 512647), (527, 413425), (575, 378913), (713, 305575), (719, 303025), (775, 281129), (1955, 111445), (2635, 82685), (3565, 61115), (3595, 60605), (9775, 22289), (12121, 17975), (12223, 17825), (13175, 16537)]