21517580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{9041}}^1$

素因数の和:9074

約数の個数: 48

約数和(自身を含む): 54686016

約数和(自身を除く): 33168436

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 85, 119, 140, 170, 238, 340, 476, 595, 1190, 2380, 9041, 18082, 36164, 45205, 63287, 90410, 126574, 153697, 180820, 253148, 307394, 316435, 614788, 632870, 768485, 1075879, 1265740, 1536970, 2151758, 3073940, 4303516, 5379395, 10758790, 21517580]

約数ペア:

[(1, 21517580), (2, 10758790), (4, 5379395), (5, 4303516), (7, 3073940), (10, 2151758), (14, 1536970), (17, 1265740), (20, 1075879), (28, 768485), (34, 632870), (35, 614788), (68, 316435), (70, 307394), (85, 253148), (119, 180820), (140, 153697), (170, 126574), (238, 90410), (340, 63287), (476, 45205), (595, 36164), (1190, 18082), (2380, 9041)]