64716040

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{39461}}^1$

素因数の和:39513

約数の個数: 32

約数和(自身を含む): 149166360

約数和(自身を除く): 84450320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 39461, 78922, 157844, 197305, 315688, 394610, 789220, 1578440, 1617901, 3235802, 6471604, 8089505, 12943208, 16179010, 32358020, 64716040]

約数ペア:

[(1, 64716040), (2, 32358020), (4, 16179010), (5, 12943208), (8, 8089505), (10, 6471604), (20, 3235802), (40, 1617901), (41, 1578440), (82, 789220), (164, 394610), (205, 315688), (328, 197305), (410, 157844), (820, 78922), (1640, 39461)]