81137420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{409}}^1$

素因数の和:547

約数の個数: 96

約数和(自身を含む): 212150400

約数和(自身を除く): 131012980

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 109, 130, 140, 182, 218, 260, 364, 409, 436, 455, 545, 763, 818, 910, 1090, 1417, 1526, 1636, 1820, 2045, 2180, 2834, 2863, 3052, 3815, 4090, 5317, 5668, 5726, 7085, 7630, 8180, 9919, 10634, 11452, 14170, 14315, 15260, 19838, 21268, 26585, 28340, 28630, 37219, 39676, 44581, 49595, 53170, 57260, 74438, 89162, 99190, 106340, 148876, 178324, 186095, 198380, 222905, 312067, 372190, 445810, 579553, 624134, 744380, 891620, 1159106, 1248268, 1560335, 2318212, 2897765, 3120670, 4056871, 5795530, 6241340, 8113742, 11591060, 16227484, 20284355, 40568710, 81137420]

約数ペア:

[(1, 81137420), (2, 40568710), (4, 20284355), (5, 16227484), (7, 11591060), (10, 8113742), (13, 6241340), (14, 5795530), (20, 4056871), (26, 3120670), (28, 2897765), (35, 2318212), (52, 1560335), (65, 1248268), (70, 1159106), (91, 891620), (109, 744380), (130, 624134), (140, 579553), (182, 445810), (218, 372190), (260, 312067), (364, 222905), (409, 198380), (436, 186095), (455, 178324), (545, 148876), (763, 106340), (818, 99190), (910, 89162), (1090, 74438), (1417, 57260), (1526, 53170), (1636, 49595), (1820, 44581), (2045, 39676), (2180, 37219), (2834, 28630), (2863, 28340), (3052, 26585), (3815, 21268), (4090, 19838), (5317, 15260), (5668, 14315), (5726, 14170), (7085, 11452), (7630, 10634), (8180, 9919)]