28901860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{1249}}^1$

素因数の和:1360

約数の個数: 48

約数和(自身を含む): 66150000

約数和(自身を除く): 37248140

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 89, 130, 178, 260, 356, 445, 890, 1157, 1249, 1780, 2314, 2498, 4628, 4996, 5785, 6245, 11570, 12490, 16237, 23140, 24980, 32474, 64948, 81185, 111161, 162370, 222322, 324740, 444644, 555805, 1111610, 1445093, 2223220, 2890186, 5780372, 7225465, 14450930, 28901860]

約数ペア:

[(1, 28901860), (2, 14450930), (4, 7225465), (5, 5780372), (10, 2890186), (13, 2223220), (20, 1445093), (26, 1111610), (52, 555805), (65, 444644), (89, 324740), (130, 222322), (178, 162370), (260, 111161), (356, 81185), (445, 64948), (890, 32474), (1157, 24980), (1249, 23140), (1780, 16237), (2314, 12490), (2498, 11570), (4628, 6245), (4996, 5785)]