1987660

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{149}}^1$

素因数の和:210

約数の個数: 48

約数和(自身を含む): 4536000

約数和(自身を除く): 2548340

約数列:

[1, 2, 4, 5, 10, 20, 23, 29, 46, 58, 92, 115, 116, 145, 149, 230, 290, 298, 460, 580, 596, 667, 745, 1334, 1490, 2668, 2980, 3335, 3427, 4321, 6670, 6854, 8642, 13340, 13708, 17135, 17284, 21605, 34270, 43210, 68540, 86420, 99383, 198766, 397532, 496915, 993830, 1987660]

約数ペア:

[(1, 1987660), (2, 993830), (4, 496915), (5, 397532), (10, 198766), (20, 99383), (23, 86420), (29, 68540), (46, 43210), (58, 34270), (92, 21605), (115, 17284), (116, 17135), (145, 13708), (149, 13340), (230, 8642), (290, 6854), (298, 6670), (460, 4321), (580, 3427), (596, 3335), (667, 2980), (745, 2668), (1334, 1490)]