8008220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{409}}^1$

素因数の和:518

約数の個数: 48

約数和(自身を含む): 18597600

約数和(自身を除く): 10589380

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 178, 220, 356, 409, 445, 818, 890, 979, 1636, 1780, 1958, 2045, 3916, 4090, 4499, 4895, 8180, 8998, 9790, 17996, 19580, 22495, 36401, 44990, 72802, 89980, 145604, 182005, 364010, 400411, 728020, 800822, 1601644, 2002055, 4004110, 8008220]

約数ペア:

[(1, 8008220), (2, 4004110), (4, 2002055), (5, 1601644), (10, 800822), (11, 728020), (20, 400411), (22, 364010), (44, 182005), (55, 145604), (89, 89980), (110, 72802), (178, 44990), (220, 36401), (356, 22495), (409, 19580), (445, 17996), (818, 9790), (890, 8998), (979, 8180), (1636, 4895), (1780, 4499), (1958, 4090), (2045, 3916)]