2005123016

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{109}}^1\times {\mathrm{2239}}^1$

素因数の和:2446

約数の個数: 64

約数和(自身を含む): 4139520000

約数和(自身を除く): 2134396984

約数列:

[1, 2, 4, 8, 13, 26, 52, 79, 104, 109, 158, 218, 316, 436, 632, 872, 1027, 1417, 2054, 2239, 2834, 4108, 4478, 5668, 8216, 8611, 8956, 11336, 17222, 17912, 29107, 34444, 58214, 68888, 111943, 116428, 176881, 223886, 232856, 244051, 353762, 447772, 488102, 707524, 895544, 976204, 1415048, 1952408, 2299453, 3172663, 4598906, 6345326, 9197812, 12690652, 18395624, 19280029, 25381304, 38560058, 77120116, 154240232, 250640377, 501280754, 1002561508, 2005123016]

約数ペア:

[(1, 2005123016), (2, 1002561508), (4, 501280754), (8, 250640377), (13, 154240232), (26, 77120116), (52, 38560058), (79, 25381304), (104, 19280029), (109, 18395624), (158, 12690652), (218, 9197812), (316, 6345326), (436, 4598906), (632, 3172663), (872, 2299453), (1027, 1952408), (1417, 1415048), (2054, 976204), (2239, 895544), (2834, 707524), (4108, 488102), (4478, 447772), (5668, 353762), (8216, 244051), (8611, 232856), (8956, 223886), (11336, 176881), (17222, 116428), (17912, 111943), (29107, 68888), (34444, 58214)]