20199451780

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{809}}^1\times {\mathrm{43049}}^1$

素因数の和:43896

約数の個数: 48

約数和(自身を含む): 43936830000

約数和(自身を除く): 23737378220

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 809, 1618, 3236, 4045, 8090, 16180, 23461, 43049, 46922, 86098, 93844, 117305, 172196, 215245, 234610, 430490, 469220, 860980, 1248421, 2496842, 4993684, 6242105, 12484210, 24968420, 34826641, 69653282, 139306564, 174133205, 348266410, 696532820, 1009972589, 2019945178, 4039890356, 5049862945, 10099725890, 20199451780]

約数ペア:

[(1, 20199451780), (2, 10099725890), (4, 5049862945), (5, 4039890356), (10, 2019945178), (20, 1009972589), (29, 696532820), (58, 348266410), (116, 174133205), (145, 139306564), (290, 69653282), (580, 34826641), (809, 24968420), (1618, 12484210), (3236, 6242105), (4045, 4993684), (8090, 2496842), (16180, 1248421), (23461, 860980), (43049, 469220), (46922, 430490), (86098, 234610), (93844, 215245), (117305, 172196)]