20152420

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{113}}^1\times {\mathrm{241}}^1$

素因数の和:400

約数の個数: 48

約数和(自身を含む): 44030448

約数和(自身を除く): 23878028

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 113, 148, 185, 226, 241, 370, 452, 482, 565, 740, 964, 1130, 1205, 2260, 2410, 4181, 4820, 8362, 8917, 16724, 17834, 20905, 27233, 35668, 41810, 44585, 54466, 83620, 89170, 108932, 136165, 178340, 272330, 544660, 1007621, 2015242, 4030484, 5038105, 10076210, 20152420]

約数ペア:

[(1, 20152420), (2, 10076210), (4, 5038105), (5, 4030484), (10, 2015242), (20, 1007621), (37, 544660), (74, 272330), (113, 178340), (148, 136165), (185, 108932), (226, 89170), (241, 83620), (370, 54466), (452, 44585), (482, 41810), (565, 35668), (740, 27233), (964, 20905), (1130, 17834), (1205, 16724), (2260, 8917), (2410, 8362), (4181, 4820)]