217878920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{18979}}^1$

素因数の和:19038

約数の個数: 64

約数和(自身を含む): 573955200

約数和(自身を除く): 356076280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 41, 56, 70, 82, 140, 164, 205, 280, 287, 328, 410, 574, 820, 1148, 1435, 1640, 2296, 2870, 5740, 11480, 18979, 37958, 75916, 94895, 132853, 151832, 189790, 265706, 379580, 531412, 664265, 759160, 778139, 1062824, 1328530, 1556278, 2657060, 3112556, 3890695, 5314120, 5446973, 6225112, 7781390, 10893946, 15562780, 21787892, 27234865, 31125560, 43575784, 54469730, 108939460, 217878920]

約数ペア:

[(1, 217878920), (2, 108939460), (4, 54469730), (5, 43575784), (7, 31125560), (8, 27234865), (10, 21787892), (14, 15562780), (20, 10893946), (28, 7781390), (35, 6225112), (40, 5446973), (41, 5314120), (56, 3890695), (70, 3112556), (82, 2657060), (140, 1556278), (164, 1328530), (205, 1062824), (280, 778139), (287, 759160), (328, 664265), (410, 531412), (574, 379580), (820, 265706), (1148, 189790), (1435, 151832), (1640, 132853), (2296, 94895), (2870, 75916), (5740, 37958), (11480, 18979)]