16278920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{1237}}^1$

素因数の和:1302

約数の個数: 64

約数和(自身を含む): 42785280

約数和(自身を除く): 26506360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 47, 56, 70, 94, 140, 188, 235, 280, 329, 376, 470, 658, 940, 1237, 1316, 1645, 1880, 2474, 2632, 3290, 4948, 6185, 6580, 8659, 9896, 12370, 13160, 17318, 24740, 34636, 43295, 49480, 58139, 69272, 86590, 116278, 173180, 232556, 290695, 346360, 406973, 465112, 581390, 813946, 1162780, 1627892, 2034865, 2325560, 3255784, 4069730, 8139460, 16278920]

約数ペア:

[(1, 16278920), (2, 8139460), (4, 4069730), (5, 3255784), (7, 2325560), (8, 2034865), (10, 1627892), (14, 1162780), (20, 813946), (28, 581390), (35, 465112), (40, 406973), (47, 346360), (56, 290695), (70, 232556), (94, 173180), (140, 116278), (188, 86590), (235, 69272), (280, 58139), (329, 49480), (376, 43295), (470, 34636), (658, 24740), (940, 17318), (1237, 13160), (1316, 12370), (1645, 9896), (1880, 8659), (2474, 6580), (2632, 6185), (3290, 4948)]