20161821320

素因数分解:

$2^3\times 5^1\times {\mathrm{317}}^1\times {\mathrm{1590049}}^1$

素因数の和:1590377

約数の個数: 32

約数和(自身を含む): 45507231000

約数和(自身を除く): 25345409680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 317, 634, 1268, 1585, 2536, 3170, 6340, 12680, 1590049, 3180098, 6360196, 7950245, 12720392, 15900490, 31800980, 63601960, 504045533, 1008091066, 2016182132, 2520227665, 4032364264, 5040455330, 10080910660, 20161821320]

約数ペア:

[(1, 20161821320), (2, 10080910660), (4, 5040455330), (5, 4032364264), (8, 2520227665), (10, 2016182132), (20, 1008091066), (40, 504045533), (317, 63601960), (634, 31800980), (1268, 15900490), (1585, 12720392), (2536, 7950245), (3170, 6360196), (6340, 3180098), (12680, 1590049)]