19648880

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{3109}}^1$

素因数の和:3201

約数の個数: 40

約数和(自身を含む): 46276800

約数和(自身を除く): 26627920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 1264, 1580, 3109, 3160, 6218, 6320, 12436, 15545, 24872, 31090, 49744, 62180, 124360, 245611, 248720, 491222, 982444, 1228055, 1964888, 2456110, 3929776, 4912220, 9824440, 19648880]

約数ペア:

[(1, 19648880), (2, 9824440), (4, 4912220), (5, 3929776), (8, 2456110), (10, 1964888), (16, 1228055), (20, 982444), (40, 491222), (79, 248720), (80, 245611), (158, 124360), (316, 62180), (395, 49744), (632, 31090), (790, 24872), (1264, 15545), (1580, 12436), (3109, 6320), (3160, 6218)]