19619990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{4079}}^1$

素因数の和:4136

約数の個数: 32

約数和(自身を含む): 39070080

約数和(自身を除く): 19450090

約数列:

[1, 2, 5, 10, 13, 26, 37, 65, 74, 130, 185, 370, 481, 962, 2405, 4079, 4810, 8158, 20395, 40790, 53027, 106054, 150923, 265135, 301846, 530270, 754615, 1509230, 1961999, 3923998, 9809995, 19619990]

約数ペア:

[(1, 19619990), (2, 9809995), (5, 3923998), (10, 1961999), (13, 1509230), (26, 754615), (37, 530270), (65, 301846), (74, 265135), (130, 150923), (185, 106054), (370, 53027), (481, 40790), (962, 20395), (2405, 8158), (4079, 4810)]