18412280

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{109}}^1$

素因数の和:264

約数の個数: 64

約数和(自身を含む): 43243200

約数和(自身を除く): 24830920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 103, 109, 164, 205, 206, 218, 328, 410, 412, 436, 515, 545, 820, 824, 872, 1030, 1090, 1640, 2060, 2180, 4120, 4223, 4360, 4469, 8446, 8938, 11227, 16892, 17876, 21115, 22345, 22454, 33784, 35752, 42230, 44690, 44908, 56135, 84460, 89380, 89816, 112270, 168920, 178760, 224540, 449080, 460307, 920614, 1841228, 2301535, 3682456, 4603070, 9206140, 18412280]

約数ペア:

[(1, 18412280), (2, 9206140), (4, 4603070), (5, 3682456), (8, 2301535), (10, 1841228), (20, 920614), (40, 460307), (41, 449080), (82, 224540), (103, 178760), (109, 168920), (164, 112270), (205, 89816), (206, 89380), (218, 84460), (328, 56135), (410, 44908), (412, 44690), (436, 42230), (515, 35752), (545, 33784), (820, 22454), (824, 22345), (872, 21115), (1030, 17876), (1090, 16892), (1640, 11227), (2060, 8938), (2180, 8446), (4120, 4469), (4223, 4360)]