21681715

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23189}}^1$

素因数の和:23222

約数の個数: 16

約数和(自身を含む): 30054240

約数和(自身を除く): 8372525

約数列:

[1, 5, 11, 17, 55, 85, 187, 935, 23189, 115945, 255079, 394213, 1275395, 1971065, 4336343, 21681715]

約数ペア:

[(1, 21681715), (5, 4336343), (11, 1971065), (17, 1275395), (55, 394213), (85, 255079), (187, 115945), (935, 23189)]