21244559

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{229}}^1\times {\mathrm{457}}^1$

素因数の和:722

約数の個数: 16

約数和(自身を含む): 25281600

約数和(自身を除く): 4037041

約数列:

[1, 7, 29, 203, 229, 457, 1603, 3199, 6641, 13253, 46487, 92771, 104653, 732571, 3034937, 21244559]

約数ペア:

[(1, 21244559), (7, 3034937), (29, 732571), (203, 104653), (229, 92771), (457, 46487), (1603, 13253), (3199, 6641)]