20099120

素因数分解:

$2^4\times 5^1\times {\mathrm{277}}^1\times {\mathrm{907}}^1$

素因数の和:1197

約数の個数: 40

約数和(自身を含む): 46950864

約数和(自身を除く): 26851744

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 277, 554, 907, 1108, 1385, 1814, 2216, 2770, 3628, 4432, 4535, 5540, 7256, 9070, 11080, 14512, 18140, 22160, 36280, 72560, 251239, 502478, 1004956, 1256195, 2009912, 2512390, 4019824, 5024780, 10049560, 20099120]

約数ペア:

[(1, 20099120), (2, 10049560), (4, 5024780), (5, 4019824), (8, 2512390), (10, 2009912), (16, 1256195), (20, 1004956), (40, 502478), (80, 251239), (277, 72560), (554, 36280), (907, 22160), (1108, 18140), (1385, 14512), (1814, 11080), (2216, 9070), (2770, 7256), (3628, 5540), (4432, 4535)]