664758440

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{251}}^1\times {\mathrm{907}}^1$

素因数の和:1242

約数の個数: 64

約数和(自身を含む): 1523914560

約数和(自身を除く): 859156120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 251, 292, 365, 502, 584, 730, 907, 1004, 1255, 1460, 1814, 2008, 2510, 2920, 3628, 4535, 5020, 7256, 9070, 10040, 18140, 18323, 36280, 36646, 66211, 73292, 91615, 132422, 146584, 183230, 227657, 264844, 331055, 366460, 455314, 529688, 662110, 732920, 910628, 1138285, 1324220, 1821256, 2276570, 2648440, 4553140, 9106280, 16618961, 33237922, 66475844, 83094805, 132951688, 166189610, 332379220, 664758440]

約数ペア:

[(1, 664758440), (2, 332379220), (4, 166189610), (5, 132951688), (8, 83094805), (10, 66475844), (20, 33237922), (40, 16618961), (73, 9106280), (146, 4553140), (251, 2648440), (292, 2276570), (365, 1821256), (502, 1324220), (584, 1138285), (730, 910628), (907, 732920), (1004, 662110), (1255, 529688), (1460, 455314), (1814, 366460), (2008, 331055), (2510, 264844), (2920, 227657), (3628, 183230), (4535, 146584), (5020, 132422), (7256, 91615), (9070, 73292), (10040, 66211), (18140, 36646), (18323, 36280)]