21545503

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{163}}^1\times {\mathrm{821}}^1$

素因数の和:1014

約数の個数: 16

約数和(自身を含む): 25883136

約数和(自身を除く): 4337633

約数列:

[1, 7, 23, 161, 163, 821, 1141, 3749, 5747, 18883, 26243, 132181, 133823, 936761, 3077929, 21545503]

約数ペア:

[(1, 21545503), (7, 3077929), (23, 936761), (161, 133823), (163, 132181), (821, 26243), (1141, 18883), (3749, 5747)]