71444120

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{397}}^1\times {\mathrm{409}}^1$

素因数の和:828

約数の個数: 64

約数和(自身を含む): 176234400

約数和(自身を除く): 104790280

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 397, 409, 440, 794, 818, 1588, 1636, 1985, 2045, 3176, 3272, 3970, 4090, 4367, 4499, 7940, 8180, 8734, 8998, 15880, 16360, 17468, 17996, 21835, 22495, 34936, 35992, 43670, 44990, 87340, 89980, 162373, 174680, 179960, 324746, 649492, 811865, 1298984, 1623730, 1786103, 3247460, 3572206, 6494920, 7144412, 8930515, 14288824, 17861030, 35722060, 71444120]

約数ペア:

[(1, 71444120), (2, 35722060), (4, 17861030), (5, 14288824), (8, 8930515), (10, 7144412), (11, 6494920), (20, 3572206), (22, 3247460), (40, 1786103), (44, 1623730), (55, 1298984), (88, 811865), (110, 649492), (220, 324746), (397, 179960), (409, 174680), (440, 162373), (794, 89980), (818, 87340), (1588, 44990), (1636, 43670), (1985, 35992), (2045, 34936), (3176, 22495), (3272, 21835), (3970, 17996), (4090, 17468), (4367, 16360), (4499, 15880), (7940, 8998), (8180, 8734)]