21234620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{263}}^1\times {\mathrm{367}}^1$

素因数の和:650

約数の個数: 48

約数和(自身を含む): 48964608

約数和(自身を除く): 27729988

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 263, 367, 526, 734, 1052, 1315, 1468, 1835, 2630, 2893, 3670, 4037, 5260, 5786, 7340, 8074, 11572, 14465, 16148, 20185, 28930, 40370, 57860, 80740, 96521, 193042, 386084, 482605, 965210, 1061731, 1930420, 2123462, 4246924, 5308655, 10617310, 21234620]

約数ペア:

[(1, 21234620), (2, 10617310), (4, 5308655), (5, 4246924), (10, 2123462), (11, 1930420), (20, 1061731), (22, 965210), (44, 482605), (55, 386084), (110, 193042), (220, 96521), (263, 80740), (367, 57860), (526, 40370), (734, 28930), (1052, 20185), (1315, 16148), (1468, 14465), (1835, 11572), (2630, 8074), (2893, 7340), (3670, 5786), (4037, 5260)]