21271384

素因数分解:

$2^3\times {\mathrm{29}}^1\times {\mathrm{277}}^1\times {\mathrm{331}}^1$

素因数の和:643

約数の個数: 32

約数和(自身を含む): 41533200

約数和(自身を除く): 20261816

約数列:

[1, 2, 4, 8, 29, 58, 116, 232, 277, 331, 554, 662, 1108, 1324, 2216, 2648, 8033, 9599, 16066, 19198, 32132, 38396, 64264, 76792, 91687, 183374, 366748, 733496, 2658923, 5317846, 10635692, 21271384]

約数ペア:

[(1, 21271384), (2, 10635692), (4, 5317846), (8, 2658923), (29, 733496), (58, 366748), (116, 183374), (232, 91687), (277, 76792), (331, 64264), (554, 38396), (662, 32132), (1108, 19198), (1324, 16066), (2216, 9599), (2648, 8033)]