20135860

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{149}}^1\times {\mathrm{233}}^1$

素因数の和:420

約数の個数: 48

約数和(自身を含む): 44226000

約数和(自身を除く): 24090140

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 149, 233, 290, 298, 466, 580, 596, 745, 932, 1165, 1490, 2330, 2980, 4321, 4660, 6757, 8642, 13514, 17284, 21605, 27028, 33785, 34717, 43210, 67570, 69434, 86420, 135140, 138868, 173585, 347170, 694340, 1006793, 2013586, 4027172, 5033965, 10067930, 20135860]

約数ペア:

[(1, 20135860), (2, 10067930), (4, 5033965), (5, 4027172), (10, 2013586), (20, 1006793), (29, 694340), (58, 347170), (116, 173585), (145, 138868), (149, 135140), (233, 86420), (290, 69434), (298, 67570), (466, 43210), (580, 34717), (596, 33785), (745, 27028), (932, 21605), (1165, 17284), (1490, 13514), (2330, 8642), (2980, 6757), (4321, 4660)]