21000307088

素因数分解:

$2^4\times {\mathrm{79}}^1\times {\mathrm{2939}}^1\times {\mathrm{5653}}^1$

素因数の和:8679

約数の個数: 40

約数和(自身を含む): 41224444800

約数和(自身を除く): 20224137712

約数列:

[1, 2, 4, 8, 16, 79, 158, 316, 632, 1264, 2939, 5653, 5878, 11306, 11756, 22612, 23512, 45224, 47024, 90448, 232181, 446587, 464362, 893174, 928724, 1786348, 1857448, 3572696, 3714896, 7145392, 16614167, 33228334, 66456668, 132913336, 265826672, 1312519193, 2625038386, 5250076772, 10500153544, 21000307088]

約数ペア:

[(1, 21000307088), (2, 10500153544), (4, 5250076772), (8, 2625038386), (16, 1312519193), (79, 265826672), (158, 132913336), (316, 66456668), (632, 33228334), (1264, 16614167), (2939, 7145392), (5653, 3714896), (5878, 3572696), (11306, 1857448), (11756, 1786348), (22612, 928724), (23512, 893174), (45224, 464362), (47024, 446587), (90448, 232181)]