1640412740

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{2645827}}^1$

素因数の和:2645867

約数の個数: 24

約数和(自身を含む): 3555992832

約数和(自身を除く): 1915580092

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 2645827, 5291654, 10583308, 13229135, 26458270, 52916540, 82020637, 164041274, 328082548, 410103185, 820206370, 1640412740]

約数ペア:

[(1, 1640412740), (2, 820206370), (4, 410103185), (5, 328082548), (10, 164041274), (20, 82020637), (31, 52916540), (62, 26458270), (124, 13229135), (155, 10583308), (310, 5291654), (620, 2645827)]