20784472

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{2281}}^1$

素因数の和:2371

約数の個数: 32

約数和(自身を含む): 41897520

約数和(自身を除く): 21113048

約数列:

[1, 2, 4, 8, 17, 34, 67, 68, 134, 136, 268, 536, 1139, 2278, 2281, 4556, 4562, 9112, 9124, 18248, 38777, 77554, 152827, 155108, 305654, 310216, 611308, 1222616, 2598059, 5196118, 10392236, 20784472]

約数ペア:

[(1, 20784472), (2, 10392236), (4, 5196118), (8, 2598059), (17, 1222616), (34, 611308), (67, 310216), (68, 305654), (134, 155108), (136, 152827), (268, 77554), (536, 38777), (1139, 18248), (2278, 9124), (2281, 9112), (4556, 4562)]