51515240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{251}}^1\times {\mathrm{733}}^1$

素因数の和:1002

約数の個数: 64

約数和(自身を含む): 133176960

約数和(自身を除く): 81661720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 251, 280, 502, 733, 1004, 1255, 1466, 1757, 2008, 2510, 2932, 3514, 3665, 5020, 5131, 5864, 7028, 7330, 8785, 10040, 10262, 14056, 14660, 17570, 20524, 25655, 29320, 35140, 41048, 51310, 70280, 102620, 183983, 205240, 367966, 735932, 919915, 1287881, 1471864, 1839830, 2575762, 3679660, 5151524, 6439405, 7359320, 10303048, 12878810, 25757620, 51515240]

約数ペア:

[(1, 51515240), (2, 25757620), (4, 12878810), (5, 10303048), (7, 7359320), (8, 6439405), (10, 5151524), (14, 3679660), (20, 2575762), (28, 1839830), (35, 1471864), (40, 1287881), (56, 919915), (70, 735932), (140, 367966), (251, 205240), (280, 183983), (502, 102620), (733, 70280), (1004, 51310), (1255, 41048), (1466, 35140), (1757, 29320), (2008, 25655), (2510, 20524), (2932, 17570), (3514, 14660), (3665, 14056), (5020, 10262), (5131, 10040), (5864, 8785), (7028, 7330)]