20809399016

素因数分解:

$2^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{278767}}^1$

素因数の和:278854

約数の個数: 64

約数和(自身を含む): 47100641280

約数和(自身を除く): 26291242264

約数列:

[1, 2, 4, 7, 8, 14, 28, 31, 43, 56, 62, 86, 124, 172, 217, 248, 301, 344, 434, 602, 868, 1204, 1333, 1736, 2408, 2666, 5332, 9331, 10664, 18662, 37324, 74648, 278767, 557534, 1115068, 1951369, 2230136, 3902738, 7805476, 8641777, 11986981, 15610952, 17283554, 23973962, 34567108, 47947924, 60492439, 69134216, 83908867, 95895848, 120984878, 167817734, 241969756, 335635468, 371596411, 483939512, 671270936, 743192822, 1486385644, 2601174877, 2972771288, 5202349754, 10404699508, 20809399016]

約数ペア:

[(1, 20809399016), (2, 10404699508), (4, 5202349754), (7, 2972771288), (8, 2601174877), (14, 1486385644), (28, 743192822), (31, 671270936), (43, 483939512), (56, 371596411), (62, 335635468), (86, 241969756), (124, 167817734), (172, 120984878), (217, 95895848), (248, 83908867), (301, 69134216), (344, 60492439), (434, 47947924), (602, 34567108), (868, 23973962), (1204, 17283554), (1333, 15610952), (1736, 11986981), (2408, 8641777), (2666, 7805476), (5332, 3902738), (9331, 2230136), (10664, 1951369), (18662, 1115068), (37324, 557534), (74648, 278767)]