19816030

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{313}}^1\times {\mathrm{487}}^1$

素因数の和:820

約数の個数: 32

約数和(自身を含む): 38614464

約数和(自身を除く): 18798434

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 313, 487, 626, 974, 1565, 2435, 3130, 4069, 4870, 6331, 8138, 12662, 20345, 31655, 40690, 63310, 152431, 304862, 762155, 1524310, 1981603, 3963206, 9908015, 19816030]

約数ペア:

[(1, 19816030), (2, 9908015), (5, 3963206), (10, 1981603), (13, 1524310), (26, 762155), (65, 304862), (130, 152431), (313, 63310), (487, 40690), (626, 31655), (974, 20345), (1565, 12662), (2435, 8138), (3130, 6331), (4069, 4870)]