79838020

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{2111}}^1$

素因数の和:2212

約数の個数: 48

約数和(自身を含む): 175988736

約数和(自身を除く): 96150716

約数列:

[1, 2, 4, 5, 10, 20, 31, 61, 62, 122, 124, 155, 244, 305, 310, 610, 620, 1220, 1891, 2111, 3782, 4222, 7564, 8444, 9455, 10555, 18910, 21110, 37820, 42220, 65441, 128771, 130882, 257542, 261764, 327205, 515084, 643855, 654410, 1287710, 1308820, 2575420, 3991901, 7983802, 15967604, 19959505, 39919010, 79838020]

約数ペア:

[(1, 79838020), (2, 39919010), (4, 19959505), (5, 15967604), (10, 7983802), (20, 3991901), (31, 2575420), (61, 1308820), (62, 1287710), (122, 654410), (124, 643855), (155, 515084), (244, 327205), (305, 261764), (310, 257542), (610, 130882), (620, 128771), (1220, 65441), (1891, 42220), (2111, 37820), (3782, 21110), (4222, 18910), (7564, 10555), (8444, 9455)]