18900855

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{797}}^1$

素因数の和:856

約数の個数: 48

約数和(自身を含む): 35852544

約数和(自身を除く): 16951689

約数列:

[1, 3, 5, 9, 15, 17, 31, 45, 51, 85, 93, 153, 155, 255, 279, 465, 527, 765, 797, 1395, 1581, 2391, 2635, 3985, 4743, 7173, 7905, 11955, 13549, 23715, 24707, 35865, 40647, 67745, 74121, 121941, 123535, 203235, 222363, 370605, 420019, 609705, 1111815, 1260057, 2100095, 3780171, 6300285, 18900855]

約数ペア:

[(1, 18900855), (3, 6300285), (5, 3780171), (9, 2100095), (15, 1260057), (17, 1111815), (31, 609705), (45, 420019), (51, 370605), (85, 222363), (93, 203235), (153, 123535), (155, 121941), (255, 74121), (279, 67745), (465, 40647), (527, 35865), (765, 24707), (797, 23715), (1395, 13549), (1581, 11955), (2391, 7905), (2635, 7173), (3985, 4743)]