389916400

素因数分解:

$2^4\times 5^2\times {\mathrm{521}}^1\times {\mathrm{1871}}^1$

素因数の和:2410

約数の個数: 60

約数和(自身を含む): 939073824

約数和(自身を除く): 549157424

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 521, 1042, 1871, 2084, 2605, 3742, 4168, 5210, 7484, 8336, 9355, 10420, 13025, 14968, 18710, 20840, 26050, 29936, 37420, 41680, 46775, 52100, 74840, 93550, 104200, 149680, 187100, 208400, 374200, 748400, 974791, 1949582, 3899164, 4873955, 7798328, 9747910, 15596656, 19495820, 24369775, 38991640, 48739550, 77983280, 97479100, 194958200, 389916400]

約数ペア:

[(1, 389916400), (2, 194958200), (4, 97479100), (5, 77983280), (8, 48739550), (10, 38991640), (16, 24369775), (20, 19495820), (25, 15596656), (40, 9747910), (50, 7798328), (80, 4873955), (100, 3899164), (200, 1949582), (400, 974791), (521, 748400), (1042, 374200), (1871, 208400), (2084, 187100), (2605, 149680), (3742, 104200), (4168, 93550), (5210, 74840), (7484, 52100), (8336, 46775), (9355, 41680), (10420, 37420), (13025, 29936), (14968, 26050), (18710, 20840)]