18497560

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{11279}}^1$

素因数の和:11331

約数の個数: 32

約数和(自身を含む): 42638400

約数和(自身を除く): 24140840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 11279, 22558, 45116, 56395, 90232, 112790, 225580, 451160, 462439, 924878, 1849756, 2312195, 3699512, 4624390, 9248780, 18497560]

約数ペア:

[(1, 18497560), (2, 9248780), (4, 4624390), (5, 3699512), (8, 2312195), (10, 1849756), (20, 924878), (40, 462439), (41, 451160), (82, 225580), (164, 112790), (205, 90232), (328, 56395), (410, 45116), (820, 22558), (1640, 11279)]