8688980

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{211}}^1$

素因数の和:320

約数の個数: 48

約数和(自身を含む): 19232640

約数和(自身を除く): 10543660

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 71, 116, 142, 145, 211, 284, 290, 355, 422, 580, 710, 844, 1055, 1420, 2059, 2110, 4118, 4220, 6119, 8236, 10295, 12238, 14981, 20590, 24476, 29962, 30595, 41180, 59924, 61190, 74905, 122380, 149810, 299620, 434449, 868898, 1737796, 2172245, 4344490, 8688980]

約数ペア:

[(1, 8688980), (2, 4344490), (4, 2172245), (5, 1737796), (10, 868898), (20, 434449), (29, 299620), (58, 149810), (71, 122380), (116, 74905), (142, 61190), (145, 59924), (211, 41180), (284, 30595), (290, 29962), (355, 24476), (422, 20590), (580, 14981), (710, 12238), (844, 10295), (1055, 8236), (1420, 6119), (2059, 4220), (2110, 4118)]