18279280

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{7879}}^1$

素因数の和:7921

約数の個数: 40

約数和(自身を含む): 43970400

約数和(自身を除く): 25691120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 145, 232, 290, 464, 580, 1160, 2320, 7879, 15758, 31516, 39395, 63032, 78790, 126064, 157580, 228491, 315160, 456982, 630320, 913964, 1142455, 1827928, 2284910, 3655856, 4569820, 9139640, 18279280]

約数ペア:

[(1, 18279280), (2, 9139640), (4, 4569820), (5, 3655856), (8, 2284910), (10, 1827928), (16, 1142455), (20, 913964), (29, 630320), (40, 456982), (58, 315160), (80, 228491), (116, 157580), (145, 126064), (232, 78790), (290, 63032), (464, 39395), (580, 31516), (1160, 15758), (2320, 7879)]