18212560

素因数分解:

$2^4\times 5^1\times {\mathrm{251}}^1\times {\mathrm{907}}^1$

素因数の和:1171

約数の個数: 40

約数和(自身を含む): 42559776

約数和(自身を除く): 24347216

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 251, 502, 907, 1004, 1255, 1814, 2008, 2510, 3628, 4016, 4535, 5020, 7256, 9070, 10040, 14512, 18140, 20080, 36280, 72560, 227657, 455314, 910628, 1138285, 1821256, 2276570, 3642512, 4553140, 9106280, 18212560]

約数ペア:

[(1, 18212560), (2, 9106280), (4, 4553140), (5, 3642512), (8, 2276570), (10, 1821256), (16, 1138285), (20, 910628), (40, 455314), (80, 227657), (251, 72560), (502, 36280), (907, 20080), (1004, 18140), (1255, 14512), (1814, 10040), (2008, 9070), (2510, 7256), (3628, 5020), (4016, 4535)]