20884840

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{30713}}^1$

素因数の和:30741

約数の個数: 32

約数和(自身を含む): 49756680

約数和(自身を除く): 28871840

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 30713, 61426, 122852, 153565, 245704, 307130, 522121, 614260, 1044242, 1228520, 2088484, 2610605, 4176968, 5221210, 10442420, 20884840]

約数ペア:

[(1, 20884840), (2, 10442420), (4, 5221210), (5, 4176968), (8, 2610605), (10, 2088484), (17, 1228520), (20, 1044242), (34, 614260), (40, 522121), (68, 307130), (85, 245704), (136, 153565), (170, 122852), (340, 61426), (680, 30713)]