397157020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1223}}^1\times {\mathrm{1249}}^1$

素因数の和:2494

約数の個数: 48

約数和(自身を含む): 899640000

約数和(自身を除く): 502482980

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 1223, 1249, 2446, 2498, 4892, 4996, 6115, 6245, 12230, 12490, 15899, 16237, 24460, 24980, 31798, 32474, 63596, 64948, 79495, 81185, 158990, 162370, 317980, 324740, 1527527, 3055054, 6110108, 7637635, 15275270, 19857851, 30550540, 39715702, 79431404, 99289255, 198578510, 397157020]

約数ペア:

[(1, 397157020), (2, 198578510), (4, 99289255), (5, 79431404), (10, 39715702), (13, 30550540), (20, 19857851), (26, 15275270), (52, 7637635), (65, 6110108), (130, 3055054), (260, 1527527), (1223, 324740), (1249, 317980), (2446, 162370), (2498, 158990), (4892, 81185), (4996, 79495), (6115, 64948), (6245, 63596), (12230, 32474), (12490, 31798), (15899, 24980), (16237, 24460)]