19926840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{211}}^1\times {\mathrm{787}}^1$

素因数の和:1012

約数の個数: 64

約数和(自身を含む): 60140160

約数和(自身を除く): 40213320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 211, 422, 633, 787, 844, 1055, 1266, 1574, 1688, 2110, 2361, 2532, 3148, 3165, 3935, 4220, 4722, 5064, 6296, 6330, 7870, 8440, 9444, 11805, 12660, 15740, 18888, 23610, 25320, 31480, 47220, 94440, 166057, 332114, 498171, 664228, 830285, 996342, 1328456, 1660570, 1992684, 2490855, 3321140, 3985368, 4981710, 6642280, 9963420, 19926840]

約数ペア:

[(1, 19926840), (2, 9963420), (3, 6642280), (4, 4981710), (5, 3985368), (6, 3321140), (8, 2490855), (10, 1992684), (12, 1660570), (15, 1328456), (20, 996342), (24, 830285), (30, 664228), (40, 498171), (60, 332114), (120, 166057), (211, 94440), (422, 47220), (633, 31480), (787, 25320), (844, 23610), (1055, 18888), (1266, 15740), (1574, 12660), (1688, 11805), (2110, 9444), (2361, 8440), (2532, 7870), (3148, 6330), (3165, 6296), (3935, 5064), (4220, 4722)]