21719060

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{269}}^1\times {\mathrm{367}}^1$

素因数の和:656

約数の個数: 48

約数和(自身を含む): 50077440

約数和(自身を除く): 28358380

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 269, 367, 538, 734, 1076, 1345, 1468, 1835, 2690, 2959, 3670, 4037, 5380, 5918, 7340, 8074, 11836, 14795, 16148, 20185, 29590, 40370, 59180, 80740, 98723, 197446, 394892, 493615, 987230, 1085953, 1974460, 2171906, 4343812, 5429765, 10859530, 21719060]

約数ペア:

[(1, 21719060), (2, 10859530), (4, 5429765), (5, 4343812), (10, 2171906), (11, 1974460), (20, 1085953), (22, 987230), (44, 493615), (55, 394892), (110, 197446), (220, 98723), (269, 80740), (367, 59180), (538, 40370), (734, 29590), (1076, 20185), (1345, 16148), (1468, 14795), (1835, 11836), (2690, 8074), (2959, 7340), (3670, 5918), (4037, 5380)]