19171580

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{499}}^1$

素因数の和:638

約数の個数: 48

約数和(自身を含む): 43092000

約数和(自身を除く): 23920420

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 113, 170, 226, 340, 452, 499, 565, 998, 1130, 1921, 1996, 2260, 2495, 3842, 4990, 7684, 8483, 9605, 9980, 16966, 19210, 33932, 38420, 42415, 56387, 84830, 112774, 169660, 225548, 281935, 563870, 958579, 1127740, 1917158, 3834316, 4792895, 9585790, 19171580]

約数ペア:

[(1, 19171580), (2, 9585790), (4, 4792895), (5, 3834316), (10, 1917158), (17, 1127740), (20, 958579), (34, 563870), (68, 281935), (85, 225548), (113, 169660), (170, 112774), (226, 84830), (340, 56387), (452, 42415), (499, 38420), (565, 33932), (998, 19210), (1130, 16966), (1921, 9980), (1996, 9605), (2260, 8483), (2495, 7684), (3842, 4990)]