21073420

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{11839}}^1$

素因数の和:11937

約数の個数: 24

約数和(自身を含む): 44755200

約数和(自身を除く): 23681780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 11839, 23678, 47356, 59195, 118390, 236780, 1053671, 2107342, 4214684, 5268355, 10536710, 21073420]

約数ペア:

[(1, 21073420), (2, 10536710), (4, 5268355), (5, 4214684), (10, 2107342), (20, 1053671), (89, 236780), (178, 118390), (356, 59195), (445, 47356), (890, 23678), (1780, 11839)]