387860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1$

素因数の和:104

約数の個数: 48

約数和(自身を含む): 931392

約数和(自身を除く): 543532

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 41, 43, 44, 55, 82, 86, 110, 164, 172, 205, 215, 220, 410, 430, 451, 473, 820, 860, 902, 946, 1763, 1804, 1892, 2255, 2365, 3526, 4510, 4730, 7052, 8815, 9020, 9460, 17630, 19393, 35260, 38786, 77572, 96965, 193930, 387860]

約数ペア:

[(1, 387860), (2, 193930), (4, 96965), (5, 77572), (10, 38786), (11, 35260), (20, 19393), (22, 17630), (41, 9460), (43, 9020), (44, 8815), (55, 7052), (82, 4730), (86, 4510), (110, 3526), (164, 2365), (172, 2255), (205, 1892), (215, 1804), (220, 1763), (410, 946), (430, 902), (451, 860), (473, 820)]