646407970

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{5531}}^1$

素因数の和:5611

約数の個数: 64

約数和(自身を含む): 1338301440

約数和(自身を除く): 691893470

約数列:

[1, 2, 5, 10, 13, 26, 29, 31, 58, 62, 65, 130, 145, 155, 290, 310, 377, 403, 754, 806, 899, 1798, 1885, 2015, 3770, 4030, 4495, 5531, 8990, 11062, 11687, 23374, 27655, 55310, 58435, 71903, 116870, 143806, 160399, 171461, 320798, 342922, 359515, 719030, 801995, 857305, 1603990, 1714610, 2085187, 2228993, 4170374, 4457986, 4972369, 9944738, 10425935, 11144965, 20851870, 22289930, 24861845, 49723690, 64640797, 129281594, 323203985, 646407970]

約数ペア:

[(1, 646407970), (2, 323203985), (5, 129281594), (10, 64640797), (13, 49723690), (26, 24861845), (29, 22289930), (31, 20851870), (58, 11144965), (62, 10425935), (65, 9944738), (130, 4972369), (145, 4457986), (155, 4170374), (290, 2228993), (310, 2085187), (377, 1714610), (403, 1603990), (754, 857305), (806, 801995), (899, 719030), (1798, 359515), (1885, 342922), (2015, 320798), (3770, 171461), (4030, 160399), (4495, 143806), (5531, 116870), (8990, 71903), (11062, 58435), (11687, 55310), (23374, 27655)]