31551140

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{353}}^1$

素因数の和:512

約数の個数: 48

約数和(自身を含む): 68690160

約数和(自身を除く): 37139020

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 109, 164, 205, 218, 353, 410, 436, 545, 706, 820, 1090, 1412, 1765, 2180, 3530, 4469, 7060, 8938, 14473, 17876, 22345, 28946, 38477, 44690, 57892, 72365, 76954, 89380, 144730, 153908, 192385, 289460, 384770, 769540, 1577557, 3155114, 6310228, 7887785, 15775570, 31551140]

約数ペア:

[(1, 31551140), (2, 15775570), (4, 7887785), (5, 6310228), (10, 3155114), (20, 1577557), (41, 769540), (82, 384770), (109, 289460), (164, 192385), (205, 153908), (218, 144730), (353, 89380), (410, 76954), (436, 72365), (545, 57892), (706, 44690), (820, 38477), (1090, 28946), (1412, 22345), (1765, 17876), (2180, 14473), (3530, 8938), (4469, 7060)]