16820240

素因数分解:

$2^4\times 5^1\times {\mathrm{167}}^1\times {\mathrm{1259}}^1$

素因数の和:1439

約数の個数: 40

約数和(自身を含む): 39372480

約数和(自身を除く): 22552240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 167, 334, 668, 835, 1259, 1336, 1670, 2518, 2672, 3340, 5036, 6295, 6680, 10072, 12590, 13360, 20144, 25180, 50360, 100720, 210253, 420506, 841012, 1051265, 1682024, 2102530, 3364048, 4205060, 8410120, 16820240]

約数ペア:

[(1, 16820240), (2, 8410120), (4, 4205060), (5, 3364048), (8, 2102530), (10, 1682024), (16, 1051265), (20, 841012), (40, 420506), (80, 210253), (167, 100720), (334, 50360), (668, 25180), (835, 20144), (1259, 13360), (1336, 12590), (1670, 10072), (2518, 6680), (2672, 6295), (3340, 5036)]