61321240

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1\times {\mathrm{269}}^1$

素因数の和:460

約数の個数: 64

約数和(自身を含む): 142884000

約数和(自身を除く): 81562760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 139, 164, 205, 269, 278, 328, 410, 538, 556, 695, 820, 1076, 1112, 1345, 1390, 1640, 2152, 2690, 2780, 5380, 5560, 5699, 10760, 11029, 11398, 22058, 22796, 28495, 37391, 44116, 45592, 55145, 56990, 74782, 88232, 110290, 113980, 149564, 186955, 220580, 227960, 299128, 373910, 441160, 747820, 1495640, 1533031, 3066062, 6132124, 7665155, 12264248, 15330310, 30660620, 61321240]

約数ペア:

[(1, 61321240), (2, 30660620), (4, 15330310), (5, 12264248), (8, 7665155), (10, 6132124), (20, 3066062), (40, 1533031), (41, 1495640), (82, 747820), (139, 441160), (164, 373910), (205, 299128), (269, 227960), (278, 220580), (328, 186955), (410, 149564), (538, 113980), (556, 110290), (695, 88232), (820, 74782), (1076, 56990), (1112, 55145), (1345, 45592), (1390, 44116), (1640, 37391), (2152, 28495), (2690, 22796), (2780, 22058), (5380, 11398), (5560, 11029), (5699, 10760)]