18005020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{223}}^1\times {\mathrm{367}}^1$

素因数の和:610

約数の個数: 48

約数和(自身を含む): 41545728

約数和(自身を除く): 23540708

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 223, 367, 446, 734, 892, 1115, 1468, 1835, 2230, 2453, 3670, 4037, 4460, 4906, 7340, 8074, 9812, 12265, 16148, 20185, 24530, 40370, 49060, 80740, 81841, 163682, 327364, 409205, 818410, 900251, 1636820, 1800502, 3601004, 4501255, 9002510, 18005020]

約数ペア:

[(1, 18005020), (2, 9002510), (4, 4501255), (5, 3601004), (10, 1800502), (11, 1636820), (20, 900251), (22, 818410), (44, 409205), (55, 327364), (110, 163682), (220, 81841), (223, 80740), (367, 49060), (446, 40370), (734, 24530), (892, 20185), (1115, 16148), (1468, 12265), (1835, 9812), (2230, 8074), (2453, 7340), (3670, 4906), (4037, 4460)]