21730040

素因数分解:

$2^3\times 5^1\times {\mathrm{167}}^1\times {\mathrm{3253}}^1$

素因数の和:3431

約数の個数: 32

約数和(自身を含む): 49200480

約数和(自身を除く): 27470440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 167, 334, 668, 835, 1336, 1670, 3253, 3340, 6506, 6680, 13012, 16265, 26024, 32530, 65060, 130120, 543251, 1086502, 2173004, 2716255, 4346008, 5432510, 10865020, 21730040]

約数ペア:

[(1, 21730040), (2, 10865020), (4, 5432510), (5, 4346008), (8, 2716255), (10, 2173004), (20, 1086502), (40, 543251), (167, 130120), (334, 65060), (668, 32530), (835, 26024), (1336, 16265), (1670, 13012), (3253, 6680), (3340, 6506)]