18696560

素因数分解:

$2^4\times 5^1\times {\mathrm{103}}^1\times {\mathrm{2269}}^1$

素因数の和:2385

約数の個数: 40

約数和(自身を含む): 43910880

約数和(自身を除く): 25214320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 103, 206, 412, 515, 824, 1030, 1648, 2060, 2269, 4120, 4538, 8240, 9076, 11345, 18152, 22690, 36304, 45380, 90760, 181520, 233707, 467414, 934828, 1168535, 1869656, 2337070, 3739312, 4674140, 9348280, 18696560]

約数ペア:

[(1, 18696560), (2, 9348280), (4, 4674140), (5, 3739312), (8, 2337070), (10, 1869656), (16, 1168535), (20, 934828), (40, 467414), (80, 233707), (103, 181520), (206, 90760), (412, 45380), (515, 36304), (824, 22690), (1030, 18152), (1648, 11345), (2060, 9076), (2269, 8240), (4120, 4538)]