64977280

素因数分解:

$2^7\times 5^1\times {\mathrm{101527}}^1$

素因数の和:101546

約数の個数: 32

約数和(自身を含む): 155337840

約数和(自身を除く): 90360560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 101527, 203054, 406108, 507635, 812216, 1015270, 1624432, 2030540, 3248864, 4061080, 6497728, 8122160, 12995456, 16244320, 32488640, 64977280]

約数ペア:

[(1, 64977280), (2, 32488640), (4, 16244320), (5, 12995456), (8, 8122160), (10, 6497728), (16, 4061080), (20, 3248864), (32, 2030540), (40, 1624432), (64, 1015270), (80, 812216), (128, 507635), (160, 406108), (320, 203054), (640, 101527)]