40807215

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{21089}}^1$

素因数の和:21143

約数の個数: 24

約数和(自身を含む): 72380880

約数和(自身を除く): 31573665

約数列:

[1, 3, 5, 9, 15, 43, 45, 129, 215, 387, 645, 1935, 21089, 63267, 105445, 189801, 316335, 906827, 949005, 2720481, 4534135, 8161443, 13602405, 40807215]

約数ペア:

[(1, 40807215), (3, 13602405), (5, 8161443), (9, 4534135), (15, 2720481), (43, 949005), (45, 906827), (129, 316335), (215, 189801), (387, 105445), (645, 63267), (1935, 21089)]