64521215

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{6781}}^1$

素因数の和:6970

約数の個数: 16

約数和(自身を含む): 84964896

約数和(自身を除く): 20443681

約数列:

[1, 5, 11, 55, 173, 865, 1903, 6781, 9515, 33905, 74591, 372955, 1173113, 5865565, 12904243, 64521215]

約数ペア:

[(1, 64521215), (5, 12904243), (11, 5865565), (55, 1173113), (173, 372955), (865, 74591), (1903, 33905), (6781, 9515)]