161218960

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{12517}}^1$

素因数の和:12560

約数の個数: 80

約数和(自身を含む): 447042816

約数和(自身を除く): 285823856

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 35, 40, 46, 56, 70, 80, 92, 112, 115, 140, 161, 184, 230, 280, 322, 368, 460, 560, 644, 805, 920, 1288, 1610, 1840, 2576, 3220, 6440, 12517, 12880, 25034, 50068, 62585, 87619, 100136, 125170, 175238, 200272, 250340, 287891, 350476, 438095, 500680, 575782, 700952, 876190, 1001360, 1151564, 1401904, 1439455, 1752380, 2015237, 2303128, 2878910, 3504760, 4030474, 4606256, 5757820, 7009520, 8060948, 10076185, 11515640, 16121896, 20152370, 23031280, 32243792, 40304740, 80609480, 161218960]

約数ペア:

[(1, 161218960), (2, 80609480), (4, 40304740), (5, 32243792), (7, 23031280), (8, 20152370), (10, 16121896), (14, 11515640), (16, 10076185), (20, 8060948), (23, 7009520), (28, 5757820), (35, 4606256), (40, 4030474), (46, 3504760), (56, 2878910), (70, 2303128), (80, 2015237), (92, 1752380), (112, 1439455), (115, 1401904), (140, 1151564), (161, 1001360), (184, 876190), (230, 700952), (280, 575782), (322, 500680), (368, 438095), (460, 350476), (560, 287891), (644, 250340), (805, 200272), (920, 175238), (1288, 125170), (1610, 100136), (1840, 87619), (2576, 62585), (3220, 50068), (6440, 25034), (12517, 12880)]