203642840

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{197}}^1\times {\mathrm{601}}^1$

素因数の和:852

約数の個数: 64

約数和(自身を含む): 472016160

約数和(自身を除く): 268373320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 197, 215, 344, 394, 430, 601, 788, 860, 985, 1202, 1576, 1720, 1970, 2404, 3005, 3940, 4808, 6010, 7880, 8471, 12020, 16942, 24040, 25843, 33884, 42355, 51686, 67768, 84710, 103372, 118397, 129215, 169420, 206744, 236794, 258430, 338840, 473588, 516860, 591985, 947176, 1033720, 1183970, 2367940, 4735880, 5091071, 10182142, 20364284, 25455355, 40728568, 50910710, 101821420, 203642840]

約数ペア:

[(1, 203642840), (2, 101821420), (4, 50910710), (5, 40728568), (8, 25455355), (10, 20364284), (20, 10182142), (40, 5091071), (43, 4735880), (86, 2367940), (172, 1183970), (197, 1033720), (215, 947176), (344, 591985), (394, 516860), (430, 473588), (601, 338840), (788, 258430), (860, 236794), (985, 206744), (1202, 169420), (1576, 129215), (1720, 118397), (1970, 103372), (2404, 84710), (3005, 67768), (3940, 51686), (4808, 42355), (6010, 33884), (7880, 25843), (8471, 24040), (12020, 16942)]