21650950

素因数分解:

$2^1\times 5^2\times {\mathrm{173}}^1\times {\mathrm{2503}}^1$

素因数の和:2688

約数の個数: 24

約数和(自身を含む): 40519728

約数和(自身を除く): 18868778

約数列:

[1, 2, 5, 10, 25, 50, 173, 346, 865, 1730, 2503, 4325, 5006, 8650, 12515, 25030, 62575, 125150, 433019, 866038, 2165095, 4330190, 10825475, 21650950]

約数ペア:

[(1, 21650950), (2, 10825475), (5, 4330190), (10, 2165095), (25, 866038), (50, 433019), (173, 125150), (346, 62575), (865, 25030), (1730, 12515), (2503, 8650), (4325, 5006)]