20443275

素因数分解:

$3^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{2113}}^1$

素因数の和:2172

約数の個数: 36

約数和(自身を含む): 37485448

約数和(自身を除く): 17042173

約数列:

[1, 3, 5, 9, 15, 25, 43, 45, 75, 129, 215, 225, 387, 645, 1075, 1935, 2113, 3225, 6339, 9675, 10565, 19017, 31695, 52825, 90859, 95085, 158475, 272577, 454295, 475425, 817731, 1362885, 2271475, 4088655, 6814425, 20443275]

約数ペア:

[(1, 20443275), (3, 6814425), (5, 4088655), (9, 2271475), (15, 1362885), (25, 817731), (43, 475425), (45, 454295), (75, 272577), (129, 158475), (215, 95085), (225, 90859), (387, 52825), (645, 31695), (1075, 19017), (1935, 10565), (2113, 9675), (3225, 6339)]