20085104

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1583}}^1$

素因数の和:1665

約数の個数: 40

約数和(自身を含む): 42622272

約数和(自身を除く): 22537168

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 61, 104, 122, 208, 244, 488, 793, 976, 1583, 1586, 3166, 3172, 6332, 6344, 12664, 12688, 20579, 25328, 41158, 82316, 96563, 164632, 193126, 329264, 386252, 772504, 1255319, 1545008, 2510638, 5021276, 10042552, 20085104]

約数ペア:

[(1, 20085104), (2, 10042552), (4, 5021276), (8, 2510638), (13, 1545008), (16, 1255319), (26, 772504), (52, 386252), (61, 329264), (104, 193126), (122, 164632), (208, 96563), (244, 82316), (488, 41158), (793, 25328), (976, 20579), (1583, 12688), (1586, 12664), (3166, 6344), (3172, 6332)]