21980756161

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{177217}}^1$

素因数の和:177313

約数の個数: 32

約数和(自身を含む): 28581719040

約数和(自身を除く): 6600962879

約数列:

[1, 7, 13, 29, 47, 91, 203, 329, 377, 611, 1363, 2639, 4277, 9541, 17719, 124033, 177217, 1240519, 2303821, 5139293, 8329199, 16126747, 35975051, 58304393, 66810809, 108279587, 241546771, 467675663, 757957109, 1690827397, 3140108023, 21980756161]

約数ペア:

[(1, 21980756161), (7, 3140108023), (13, 1690827397), (29, 757957109), (47, 467675663), (91, 241546771), (203, 108279587), (329, 66810809), (377, 58304393), (611, 35975051), (1363, 16126747), (2639, 8329199), (4277, 5139293), (9541, 2303821), (17719, 1240519), (124033, 177217)]