19280080

素因数分解:

$2^4\times 5^1\times {\mathrm{401}}^1\times {\mathrm{601}}^1$

素因数の和:1015

約数の個数: 40

約数和(自身を含む): 45012744

約数和(自身を除く): 25732664

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 401, 601, 802, 1202, 1604, 2005, 2404, 3005, 3208, 4010, 4808, 6010, 6416, 8020, 9616, 12020, 16040, 24040, 32080, 48080, 241001, 482002, 964004, 1205005, 1928008, 2410010, 3856016, 4820020, 9640040, 19280080]

約数ペア:

[(1, 19280080), (2, 9640040), (4, 4820020), (5, 3856016), (8, 2410010), (10, 1928008), (16, 1205005), (20, 964004), (40, 482002), (80, 241001), (401, 48080), (601, 32080), (802, 24040), (1202, 16040), (1604, 12020), (2005, 9616), (2404, 8020), (3005, 6416), (3208, 6010), (4010, 4808)]