400807990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{117539}}^1$

素因数の和:117588

約数の個数: 32

約数和(自身を含む): 812436480

約数和(自身を除く): 411628490

約数列:

[1, 2, 5, 10, 11, 22, 31, 55, 62, 110, 155, 310, 341, 682, 1705, 3410, 117539, 235078, 587695, 1175390, 1292929, 2585858, 3643709, 6464645, 7287418, 12929290, 18218545, 36437090, 40080799, 80161598, 200403995, 400807990]

約数ペア:

[(1, 400807990), (2, 200403995), (5, 80161598), (10, 40080799), (11, 36437090), (22, 18218545), (31, 12929290), (55, 7287418), (62, 6464645), (110, 3643709), (155, 2585858), (310, 1292929), (341, 1175390), (682, 587695), (1705, 235078), (3410, 117539)]