204200120

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{227}}^1\times {\mathrm{523}}^1$

素因数の和:804

約数の個数: 64

約数和(自身を含む): 473109120

約数和(自身を除く): 268909000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 227, 344, 430, 454, 523, 860, 908, 1046, 1135, 1720, 1816, 2092, 2270, 2615, 4184, 4540, 5230, 9080, 9761, 10460, 19522, 20920, 22489, 39044, 44978, 48805, 78088, 89956, 97610, 112445, 118721, 179912, 195220, 224890, 237442, 390440, 449780, 474884, 593605, 899560, 949768, 1187210, 2374420, 4748840, 5105003, 10210006, 20420012, 25525015, 40840024, 51050030, 102100060, 204200120]

約数ペア:

[(1, 204200120), (2, 102100060), (4, 51050030), (5, 40840024), (8, 25525015), (10, 20420012), (20, 10210006), (40, 5105003), (43, 4748840), (86, 2374420), (172, 1187210), (215, 949768), (227, 899560), (344, 593605), (430, 474884), (454, 449780), (523, 390440), (860, 237442), (908, 224890), (1046, 195220), (1135, 179912), (1720, 118721), (1816, 112445), (2092, 97610), (2270, 89956), (2615, 78088), (4184, 48805), (4540, 44978), (5230, 39044), (9080, 22489), (9761, 20920), (10460, 19522)]