20451733880

素因数分解:

$2^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{3136769}}^1$

素因数の和:3136943

約数の個数: 32

約数和(自身を含む): 46298725200

約数和(自身を除く): 25846991320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 163, 326, 652, 815, 1304, 1630, 3260, 6520, 3136769, 6273538, 12547076, 15683845, 25094152, 31367690, 62735380, 125470760, 511293347, 1022586694, 2045173388, 2556466735, 4090346776, 5112933470, 10225866940, 20451733880]

約数ペア:

[(1, 20451733880), (2, 10225866940), (4, 5112933470), (5, 4090346776), (8, 2556466735), (10, 2045173388), (20, 1022586694), (40, 511293347), (163, 125470760), (326, 62735380), (652, 31367690), (815, 25094152), (1304, 15683845), (1630, 12547076), (3260, 6273538), (6520, 3136769)]