21069160

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{1601}}^1$

素因数の和:1666

約数の個数: 64

約数和(自身を含む): 55365120

約数和(自身を除く): 34295960

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, 1316, 1601, 1645, 1880, 2632, 3202, 3290, 6404, 6580, 8005, 11207, 12808, 13160, 16010, 22414, 32020, 44828, 56035, 64040, 75247, 89656, 112070, 150494, 224140, 300988, 376235, 448280, 526729, 601976, 752470, 1053458, 1504940, 2106916, 2633645, 3009880, 4213832, 5267290, 10534580, 21069160]

約数ペア:

[(1, 21069160), (2, 10534580), (4, 5267290), (5, 4213832), (7, 3009880), (8, 2633645), (10, 2106916), (14, 1504940), (20, 1053458), (28, 752470), (35, 601976), (40, 526729), (47, 448280), (56, 376235), (70, 300988), (94, 224140), (140, 150494), (188, 112070), (235, 89656), (280, 75247), (329, 64040), (376, 56035), (470, 44828), (658, 32020), (940, 22414), (1316, 16010), (1601, 13160), (1645, 12808), (1880, 11207), (2632, 8005), (3202, 6580), (3290, 6404)]