21717705

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{109}}^1\times {\mathrm{359}}^1$

素因数の和:513

約数の個数: 32

約数和(自身を含む): 36115200

約数和(自身を除く): 14397495

約数列:

[1, 3, 5, 15, 37, 109, 111, 185, 327, 359, 545, 555, 1077, 1635, 1795, 4033, 5385, 12099, 13283, 20165, 39131, 39849, 60495, 66415, 117393, 195655, 199245, 586965, 1447847, 4343541, 7239235, 21717705]

約数ペア:

[(1, 21717705), (3, 7239235), (5, 4343541), (15, 1447847), (37, 586965), (109, 199245), (111, 195655), (185, 117393), (327, 66415), (359, 60495), (545, 39849), (555, 39131), (1077, 20165), (1635, 13283), (1795, 12099), (4033, 5385)]