81835780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{1931}}^1$

素因数の和:2116

約数の個数: 48

約数和(自身を含む): 186306624

約数和(自身を除く): 104470844

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 163, 260, 326, 652, 815, 1630, 1931, 2119, 3260, 3862, 4238, 7724, 8476, 9655, 10595, 19310, 21190, 25103, 38620, 42380, 50206, 100412, 125515, 251030, 314753, 502060, 629506, 1259012, 1573765, 3147530, 4091789, 6295060, 8183578, 16367156, 20458945, 40917890, 81835780]

約数ペア:

[(1, 81835780), (2, 40917890), (4, 20458945), (5, 16367156), (10, 8183578), (13, 6295060), (20, 4091789), (26, 3147530), (52, 1573765), (65, 1259012), (130, 629506), (163, 502060), (260, 314753), (326, 251030), (652, 125515), (815, 100412), (1630, 50206), (1931, 42380), (2119, 38620), (3260, 25103), (3862, 21190), (4238, 19310), (7724, 10595), (8476, 9655)]