20648415

素因数分解:

$3^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1\times {\mathrm{173}}^1$

素因数の和:363

約数の個数: 32

約数和(自身を含む): 33992640

約数和(自身を除く): 13344225

約数列:

[1, 3, 5, 15, 73, 109, 173, 219, 327, 365, 519, 545, 865, 1095, 1635, 2595, 7957, 12629, 18857, 23871, 37887, 39785, 56571, 63145, 94285, 119355, 189435, 282855, 1376561, 4129683, 6882805, 20648415]

約数ペア:

[(1, 20648415), (3, 6882805), (5, 4129683), (15, 1376561), (73, 282855), (109, 189435), (173, 119355), (219, 94285), (327, 63145), (365, 56571), (519, 39785), (545, 37887), (865, 23871), (1095, 18857), (1635, 12629), (2595, 7957)]