21370853

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{3821}}^1$

素因数の和:3892

約数の個数: 16

約数和(自身を含む): 26417664

約数和(自身を除く): 5046811

約数列:

[1, 7, 17, 47, 119, 329, 799, 3821, 5593, 26747, 64957, 179587, 454699, 1257109, 3052979, 21370853]

約数ペア:

[(1, 21370853), (7, 3052979), (17, 1257109), (47, 454699), (119, 179587), (329, 64957), (799, 26747), (3821, 5593)]