19728020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{3299}}^1$

素因数の和:3344

約数の個数: 48

約数和(自身を含む): 46569600

約数和(自身を除く): 26841580

約数列:

[1, 2, 4, 5, 10, 13, 20, 23, 26, 46, 52, 65, 92, 115, 130, 230, 260, 299, 460, 598, 1196, 1495, 2990, 3299, 5980, 6598, 13196, 16495, 32990, 42887, 65980, 75877, 85774, 151754, 171548, 214435, 303508, 379385, 428870, 758770, 857740, 986401, 1517540, 1972802, 3945604, 4932005, 9864010, 19728020]

約数ペア:

[(1, 19728020), (2, 9864010), (4, 4932005), (5, 3945604), (10, 1972802), (13, 1517540), (20, 986401), (23, 857740), (26, 758770), (46, 428870), (52, 379385), (65, 303508), (92, 214435), (115, 171548), (130, 151754), (230, 85774), (260, 75877), (299, 65980), (460, 42887), (598, 32990), (1196, 16495), (1495, 13196), (2990, 6598), (3299, 5980)]