81830840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{22481}}^1$

素因数の和:22512

約数の個数: 64

約数和(自身を含む): 226618560

約数和(自身を除く): 144787720

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 22481, 44962, 89924, 112405, 157367, 179848, 224810, 292253, 314734, 449620, 584506, 629468, 786835, 899240, 1169012, 1258936, 1461265, 1573670, 2045771, 2338024, 2922530, 3147340, 4091542, 5845060, 6294680, 8183084, 10228855, 11690120, 16366168, 20457710, 40915420, 81830840]

約数ペア:

[(1, 81830840), (2, 40915420), (4, 20457710), (5, 16366168), (7, 11690120), (8, 10228855), (10, 8183084), (13, 6294680), (14, 5845060), (20, 4091542), (26, 3147340), (28, 2922530), (35, 2338024), (40, 2045771), (52, 1573670), (56, 1461265), (65, 1258936), (70, 1169012), (91, 899240), (104, 786835), (130, 629468), (140, 584506), (182, 449620), (260, 314734), (280, 292253), (364, 224810), (455, 179848), (520, 157367), (728, 112405), (910, 89924), (1820, 44962), (3640, 22481)]