21976340

素因数分解:

$2^2\times 5^1\times {\mathrm{439}}^1\times {\mathrm{2503}}^1$

素因数の和:2951

約数の個数: 24

約数和(自身を含む): 46273920

約数和(自身を除く): 24297580

約数列:

[1, 2, 4, 5, 10, 20, 439, 878, 1756, 2195, 2503, 4390, 5006, 8780, 10012, 12515, 25030, 50060, 1098817, 2197634, 4395268, 5494085, 10988170, 21976340]

約数ペア:

[(1, 21976340), (2, 10988170), (4, 5494085), (5, 4395268), (10, 2197634), (20, 1098817), (439, 50060), (878, 25030), (1756, 12515), (2195, 10012), (2503, 8780), (4390, 5006)]