18502480

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{5641}}^1$

素因数の和:5695

約数の個数: 40

約数和(自身を含む): 44075304

約数和(自身を除く): 25572824

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 5641, 11282, 22564, 28205, 45128, 56410, 90256, 112820, 225640, 231281, 451280, 462562, 925124, 1156405, 1850248, 2312810, 3700496, 4625620, 9251240, 18502480]

約数ペア:

[(1, 18502480), (2, 9251240), (4, 4625620), (5, 3700496), (8, 2312810), (10, 1850248), (16, 1156405), (20, 925124), (40, 462562), (41, 451280), (80, 231281), (82, 225640), (164, 112820), (205, 90256), (328, 56410), (410, 45128), (656, 28205), (820, 22564), (1640, 11282), (3280, 5641)]