19780792

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{3931}}^1$

素因数の和:3991

約数の個数: 32

約数和(自身を含む): 40342320

約数和(自身を除く): 20561528

約数列:

[1, 2, 4, 8, 17, 34, 37, 68, 74, 136, 148, 296, 629, 1258, 2516, 3931, 5032, 7862, 15724, 31448, 66827, 133654, 145447, 267308, 290894, 534616, 581788, 1163576, 2472599, 4945198, 9890396, 19780792]

約数ペア:

[(1, 19780792), (2, 9890396), (4, 4945198), (8, 2472599), (17, 1163576), (34, 581788), (37, 534616), (68, 290894), (74, 267308), (136, 145447), (148, 133654), (296, 66827), (629, 31448), (1258, 15724), (2516, 7862), (3931, 5032)]