19627040

素因数分解:

$2^5\times 5^1\times {\mathrm{241}}^1\times {\mathrm{509}}^1$

素因数の和:765

約数の個数: 48

約数和(自身を含む): 46652760

約数和(自身を除く): 27025720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 241, 482, 509, 964, 1018, 1205, 1928, 2036, 2410, 2545, 3856, 4072, 4820, 5090, 7712, 8144, 9640, 10180, 16288, 19280, 20360, 38560, 40720, 81440, 122669, 245338, 490676, 613345, 981352, 1226690, 1962704, 2453380, 3925408, 4906760, 9813520, 19627040]

約数ペア:

[(1, 19627040), (2, 9813520), (4, 4906760), (5, 3925408), (8, 2453380), (10, 1962704), (16, 1226690), (20, 981352), (32, 613345), (40, 490676), (80, 245338), (160, 122669), (241, 81440), (482, 40720), (509, 38560), (964, 20360), (1018, 19280), (1205, 16288), (1928, 10180), (2036, 9640), (2410, 8144), (2545, 7712), (3856, 5090), (4072, 4820)]