28214440

素因数分解:

$2^3\times 5^1\times {\mathrm{331}}^1\times {\mathrm{2131}}^1$

素因数の和:2473

約数の個数: 32

約数和(自身を含む): 63704160

約数和(自身を除く): 35489720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 331, 662, 1324, 1655, 2131, 2648, 3310, 4262, 6620, 8524, 10655, 13240, 17048, 21310, 42620, 85240, 705361, 1410722, 2821444, 3526805, 5642888, 7053610, 14107220, 28214440]

約数ペア:

[(1, 28214440), (2, 14107220), (4, 7053610), (5, 5642888), (8, 3526805), (10, 2821444), (20, 1410722), (40, 705361), (331, 85240), (662, 42620), (1324, 21310), (1655, 17048), (2131, 13240), (2648, 10655), (3310, 8524), (4262, 6620)]