31123840

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^1\times {\mathrm{4421}}^1$

素因数の和:4451

約数の個数: 64

約数和(自身を含む): 81187920

約数和(自身を除く): 50064080

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 320, 352, 440, 640, 704, 880, 1408, 1760, 3520, 4421, 7040, 8842, 17684, 22105, 35368, 44210, 48631, 70736, 88420, 97262, 141472, 176840, 194524, 243155, 282944, 353680, 389048, 486310, 565888, 707360, 778096, 972620, 1414720, 1556192, 1945240, 2829440, 3112384, 3890480, 6224768, 7780960, 15561920, 31123840]

約数ペア:

[(1, 31123840), (2, 15561920), (4, 7780960), (5, 6224768), (8, 3890480), (10, 3112384), (11, 2829440), (16, 1945240), (20, 1556192), (22, 1414720), (32, 972620), (40, 778096), (44, 707360), (55, 565888), (64, 486310), (80, 389048), (88, 353680), (110, 282944), (128, 243155), (160, 194524), (176, 176840), (220, 141472), (320, 97262), (352, 88420), (440, 70736), (640, 48631), (704, 44210), (880, 35368), (1408, 22105), (1760, 17684), (3520, 8842), (4421, 7040)]