31780820

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{211}}^1\times {\mathrm{443}}^1$

素因数の和:680

約数の個数: 48

約数和(自身を含む): 71160768

約数和(自身を除く): 39379948

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 211, 340, 422, 443, 844, 886, 1055, 1772, 2110, 2215, 3587, 4220, 4430, 7174, 7531, 8860, 14348, 15062, 17935, 30124, 35870, 37655, 71740, 75310, 93473, 150620, 186946, 373892, 467365, 934730, 1589041, 1869460, 3178082, 6356164, 7945205, 15890410, 31780820]

約数ペア:

[(1, 31780820), (2, 15890410), (4, 7945205), (5, 6356164), (10, 3178082), (17, 1869460), (20, 1589041), (34, 934730), (68, 467365), (85, 373892), (170, 186946), (211, 150620), (340, 93473), (422, 75310), (443, 71740), (844, 37655), (886, 35870), (1055, 30124), (1772, 17935), (2110, 15062), (2215, 14348), (3587, 8860), (4220, 7531), (4430, 7174)]