21555250

素因数分解:

$2^1\times 5^3\times {\mathrm{151}}^1\times {\mathrm{571}}^1$

素因数の和:739

約数の個数: 32

約数和(自身を含む): 40689792

約数和(自身を除く): 19134542

約数列:

[1, 2, 5, 10, 25, 50, 125, 151, 250, 302, 571, 755, 1142, 1510, 2855, 3775, 5710, 7550, 14275, 18875, 28550, 37750, 71375, 86221, 142750, 172442, 431105, 862210, 2155525, 4311050, 10777625, 21555250]

約数ペア:

[(1, 21555250), (2, 10777625), (5, 4311050), (10, 2155525), (25, 862210), (50, 431105), (125, 172442), (151, 142750), (250, 86221), (302, 71375), (571, 37750), (755, 28550), (1142, 18875), (1510, 14275), (2855, 7550), (3775, 5710)]