21358745

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{2423}}^1$

素因数の和:2512

約数の個数: 16

約数和(自身を含む): 26877312

約数和(自身を除く): 5518567

約数列:

[1, 5, 41, 43, 205, 215, 1763, 2423, 8815, 12115, 99343, 104189, 496715, 520945, 4271749, 21358745]

約数ペア:

[(1, 21358745), (5, 4271749), (41, 520945), (43, 496715), (205, 104189), (215, 99343), (1763, 12115), (2423, 8815)]