401390

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1$

素因数の和:148

約数の個数: 32

約数和(自身を含む): 816480

約数和(自身を除く): 415090

約数列:

[1, 2, 5, 10, 11, 22, 41, 55, 82, 89, 110, 178, 205, 410, 445, 451, 890, 902, 979, 1958, 2255, 3649, 4510, 4895, 7298, 9790, 18245, 36490, 40139, 80278, 200695, 401390]

約数ペア:

[(1, 401390), (2, 200695), (5, 80278), (10, 40139), (11, 36490), (22, 18245), (41, 9790), (55, 7298), (82, 4895), (89, 4510), (110, 3649), (178, 2255), (205, 1958), (410, 979), (445, 902), (451, 890)]