20181189

素因数分解:

$3^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{127}}^1$

素因数の和:214

約数の個数: 48

約数和(自身を含む): 33619968

約数和(自身を除く): 13438779

約数列:

[1, 3, 7, 21, 23, 47, 49, 69, 127, 141, 147, 161, 329, 381, 483, 889, 987, 1081, 1127, 2303, 2667, 2921, 3243, 3381, 5969, 6223, 6909, 7567, 8763, 17907, 18669, 20447, 22701, 41783, 52969, 61341, 125349, 137287, 143129, 158907, 292481, 411861, 429387, 877443, 961009, 2883027, 6727063, 20181189]

約数ペア:

[(1, 20181189), (3, 6727063), (7, 2883027), (21, 961009), (23, 877443), (47, 429387), (49, 411861), (69, 292481), (127, 158907), (141, 143129), (147, 137287), (161, 125349), (329, 61341), (381, 52969), (483, 41783), (889, 22701), (987, 20447), (1081, 18669), (1127, 17907), (2303, 8763), (2667, 7567), (2921, 6909), (3243, 6223), (3381, 5969)]