31193620

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{349}}^1$

素因数の和:508

約数の個数: 48

約数和(自身を含む): 67914000

約数和(自身を除く): 36720380

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 109, 164, 205, 218, 349, 410, 436, 545, 698, 820, 1090, 1396, 1745, 2180, 3490, 4469, 6980, 8938, 14309, 17876, 22345, 28618, 38041, 44690, 57236, 71545, 76082, 89380, 143090, 152164, 190205, 286180, 380410, 760820, 1559681, 3119362, 6238724, 7798405, 15596810, 31193620]

約数ペア:

[(1, 31193620), (2, 15596810), (4, 7798405), (5, 6238724), (10, 3119362), (20, 1559681), (41, 760820), (82, 380410), (109, 286180), (164, 190205), (205, 152164), (218, 143090), (349, 89380), (410, 76082), (436, 71545), (545, 57236), (698, 44690), (820, 38041), (1090, 28618), (1396, 22345), (1745, 17876), (2180, 14309), (3490, 8938), (4469, 6980)]