19973315

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{113}}^1$

素因数の和:223

約数の個数: 32

約数和(自身を含む): 26593920

約数和(自身を除く): 6620605

約数列:

[1, 5, 23, 29, 53, 113, 115, 145, 265, 565, 667, 1219, 1537, 2599, 3277, 3335, 5989, 6095, 7685, 12995, 16385, 29945, 35351, 75371, 137747, 173681, 176755, 376855, 688735, 868405, 3994663, 19973315]

約数ペア:

[(1, 19973315), (5, 3994663), (23, 868405), (29, 688735), (53, 376855), (113, 176755), (115, 173681), (145, 137747), (265, 75371), (565, 35351), (667, 29945), (1219, 16385), (1537, 12995), (2599, 7685), (3277, 6095), (3335, 5989)]