20506420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{5483}}^1$

素因数の和:5520

約数の個数: 48

約数和(自身を含む): 49750848

約数和(自身を除く): 29244428

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 44, 55, 68, 85, 110, 170, 187, 220, 340, 374, 748, 935, 1870, 3740, 5483, 10966, 21932, 27415, 54830, 60313, 93211, 109660, 120626, 186422, 241252, 301565, 372844, 466055, 603130, 932110, 1025321, 1206260, 1864220, 2050642, 4101284, 5126605, 10253210, 20506420]

約数ペア:

[(1, 20506420), (2, 10253210), (4, 5126605), (5, 4101284), (10, 2050642), (11, 1864220), (17, 1206260), (20, 1025321), (22, 932110), (34, 603130), (44, 466055), (55, 372844), (68, 301565), (85, 241252), (110, 186422), (170, 120626), (187, 109660), (220, 93211), (340, 60313), (374, 54830), (748, 27415), (935, 21932), (1870, 10966), (3740, 5483)]