28351876

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{389}}^1$

素因数の和:556

約数の個数: 48

約数和(自身を含む): 60278400

約数和(自身を除く): 31926524

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 137, 266, 274, 389, 532, 548, 778, 959, 1556, 1918, 2603, 2723, 3836, 5206, 5446, 7391, 10412, 10892, 14782, 18221, 29564, 36442, 51737, 53293, 72884, 103474, 106586, 206948, 213172, 373051, 746102, 1012567, 1492204, 2025134, 4050268, 7087969, 14175938, 28351876]

約数ペア:

[(1, 28351876), (2, 14175938), (4, 7087969), (7, 4050268), (14, 2025134), (19, 1492204), (28, 1012567), (38, 746102), (76, 373051), (133, 213172), (137, 206948), (266, 106586), (274, 103474), (389, 72884), (532, 53293), (548, 51737), (778, 36442), (959, 29564), (1556, 18221), (1918, 14782), (2603, 10892), (2723, 10412), (3836, 7391), (5206, 5446)]