1640269060

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{181}}^1\times {\mathrm{4157}}^1$

素因数の和:4456

約数の個数: 48

約数和(自身を含む): 3496212720

約数和(自身を除く): 1855943660

約数列:

[1, 2, 4, 5, 10, 20, 109, 181, 218, 362, 436, 545, 724, 905, 1090, 1810, 2180, 3620, 4157, 8314, 16628, 19729, 20785, 39458, 41570, 78916, 83140, 98645, 197290, 394580, 453113, 752417, 906226, 1504834, 1812452, 2265565, 3009668, 3762085, 4531130, 7524170, 9062260, 15048340, 82013453, 164026906, 328053812, 410067265, 820134530, 1640269060]

約数ペア:

[(1, 1640269060), (2, 820134530), (4, 410067265), (5, 328053812), (10, 164026906), (20, 82013453), (109, 15048340), (181, 9062260), (218, 7524170), (362, 4531130), (436, 3762085), (545, 3009668), (724, 2265565), (905, 1812452), (1090, 1504834), (1810, 906226), (2180, 752417), (3620, 453113), (4157, 394580), (8314, 197290), (16628, 98645), (19729, 83140), (20785, 78916), (39458, 41570)]