21606890

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{2539}}^1$

素因数の和:2606

約数の個数: 32

約数和(自身を含む): 41696640

約数和(自身を除く): 20089750

約数列:

[1, 2, 5, 10, 23, 37, 46, 74, 115, 185, 230, 370, 851, 1702, 2539, 4255, 5078, 8510, 12695, 25390, 58397, 93943, 116794, 187886, 291985, 469715, 583970, 939430, 2160689, 4321378, 10803445, 21606890]

約数ペア:

[(1, 21606890), (2, 10803445), (5, 4321378), (10, 2160689), (23, 939430), (37, 583970), (46, 469715), (74, 291985), (115, 187886), (185, 116794), (230, 93943), (370, 58397), (851, 25390), (1702, 12695), (2539, 8510), (4255, 5078)]