81587140

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{4051}}^1$

素因数の和:4132

約数の個数: 48

約数和(自身を含む): 183798720

約数和(自身を除く): 102211580

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 53, 76, 95, 106, 190, 212, 265, 380, 530, 1007, 1060, 2014, 4028, 4051, 5035, 8102, 10070, 16204, 20140, 20255, 40510, 76969, 81020, 153938, 214703, 307876, 384845, 429406, 769690, 858812, 1073515, 1539380, 2147030, 4079357, 4294060, 8158714, 16317428, 20396785, 40793570, 81587140]

約数ペア:

[(1, 81587140), (2, 40793570), (4, 20396785), (5, 16317428), (10, 8158714), (19, 4294060), (20, 4079357), (38, 2147030), (53, 1539380), (76, 1073515), (95, 858812), (106, 769690), (190, 429406), (212, 384845), (265, 307876), (380, 214703), (530, 153938), (1007, 81020), (1060, 76969), (2014, 40510), (4028, 20255), (4051, 20140), (5035, 16204), (8102, 10070)]