21192680

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{5953}}^1$

素因数の和:6053

約数の個数: 32

約数和(自身を含む): 48227400

約数和(自身を除く): 27034720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 5953, 11906, 23812, 29765, 47624, 59530, 119060, 238120, 529817, 1059634, 2119268, 2649085, 4238536, 5298170, 10596340, 21192680]

約数ペア:

[(1, 21192680), (2, 10596340), (4, 5298170), (5, 4238536), (8, 2649085), (10, 2119268), (20, 1059634), (40, 529817), (89, 238120), (178, 119060), (356, 59530), (445, 47624), (712, 29765), (890, 23812), (1780, 11906), (3560, 5953)]