21363475

素因数分解:

$5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{167}}^1$

素因数の和:244

約数の個数: 48

約数和(自身を含む): 32997888

約数和(自身を除く): 11634413

約数列:

[1, 5, 7, 17, 25, 35, 43, 85, 119, 167, 175, 215, 301, 425, 595, 731, 835, 1075, 1169, 1505, 2839, 2975, 3655, 4175, 5117, 5845, 7181, 7525, 14195, 18275, 19873, 25585, 29225, 35905, 50267, 70975, 99365, 122077, 127925, 179525, 251335, 496825, 610385, 854539, 1256675, 3051925, 4272695, 21363475]

約数ペア:

[(1, 21363475), (5, 4272695), (7, 3051925), (17, 1256675), (25, 854539), (35, 610385), (43, 496825), (85, 251335), (119, 179525), (167, 127925), (175, 122077), (215, 99365), (301, 70975), (425, 50267), (595, 35905), (731, 29225), (835, 25585), (1075, 19873), (1169, 18275), (1505, 14195), (2839, 7525), (2975, 7181), (3655, 5845), (4175, 5117)]