28228760

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{181}}^1\times {\mathrm{557}}^1$

素因数の和:756

約数の個数: 64

約数和(自身を含む): 73120320

約数和(自身を除く): 44891560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 181, 280, 362, 557, 724, 905, 1114, 1267, 1448, 1810, 2228, 2534, 2785, 3620, 3899, 4456, 5068, 5570, 6335, 7240, 7798, 10136, 11140, 12670, 15596, 19495, 22280, 25340, 31192, 38990, 50680, 77980, 100817, 155960, 201634, 403268, 504085, 705719, 806536, 1008170, 1411438, 2016340, 2822876, 3528595, 4032680, 5645752, 7057190, 14114380, 28228760]

約数ペア:

[(1, 28228760), (2, 14114380), (4, 7057190), (5, 5645752), (7, 4032680), (8, 3528595), (10, 2822876), (14, 2016340), (20, 1411438), (28, 1008170), (35, 806536), (40, 705719), (56, 504085), (70, 403268), (140, 201634), (181, 155960), (280, 100817), (362, 77980), (557, 50680), (724, 38990), (905, 31192), (1114, 25340), (1267, 22280), (1448, 19495), (1810, 15596), (2228, 12670), (2534, 11140), (2785, 10136), (3620, 7798), (3899, 7240), (4456, 6335), (5068, 5570)]