18415520

素因数分解:

$2^5\times 5^1\times {\mathrm{179}}^1\times {\mathrm{643}}^1$

素因数の和:837

約数の個数: 48

約数和(自身を含む): 43817760

約数和(自身を除く): 25402240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 179, 358, 643, 716, 895, 1286, 1432, 1790, 2572, 2864, 3215, 3580, 5144, 5728, 6430, 7160, 10288, 12860, 14320, 20576, 25720, 28640, 51440, 102880, 115097, 230194, 460388, 575485, 920776, 1150970, 1841552, 2301940, 3683104, 4603880, 9207760, 18415520]

約数ペア:

[(1, 18415520), (2, 9207760), (4, 4603880), (5, 3683104), (8, 2301940), (10, 1841552), (16, 1150970), (20, 920776), (32, 575485), (40, 460388), (80, 230194), (160, 115097), (179, 102880), (358, 51440), (643, 28640), (716, 25720), (895, 20576), (1286, 14320), (1432, 12860), (1790, 10288), (2572, 7160), (2864, 6430), (3215, 5728), (3580, 5144)]