18943520

素因数分解:

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

素因数の和:813

約数の個数: 48

約数和(自身を含む): 45056088

約数和(自身を除く): 26112568

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 197, 394, 601, 788, 985, 1202, 1576, 1970, 2404, 3005, 3152, 3940, 4808, 6010, 6304, 7880, 9616, 12020, 15760, 19232, 24040, 31520, 48080, 96160, 118397, 236794, 473588, 591985, 947176, 1183970, 1894352, 2367940, 3788704, 4735880, 9471760, 18943520]

約数ペア:

[(1, 18943520), (2, 9471760), (4, 4735880), (5, 3788704), (8, 2367940), (10, 1894352), (16, 1183970), (20, 947176), (32, 591985), (40, 473588), (80, 236794), (160, 118397), (197, 96160), (394, 48080), (601, 31520), (788, 24040), (985, 19232), (1202, 15760), (1576, 12020), (1970, 9616), (2404, 7880), (3005, 6304), (3152, 6010), (3940, 4808)]