21758529

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{191}}^1$

素因数の和:357

約数の個数: 32

約数和(自身を含む): 33030144

約数和(自身を除く): 11271615

約数列:

[1, 3, 13, 23, 39, 69, 127, 191, 299, 381, 573, 897, 1651, 2483, 2921, 4393, 4953, 7449, 8763, 13179, 24257, 37973, 57109, 72771, 113919, 171327, 315341, 557911, 946023, 1673733, 7252843, 21758529]

約数ペア:

[(1, 21758529), (3, 7252843), (13, 1673733), (23, 946023), (39, 557911), (69, 315341), (127, 171327), (191, 113919), (299, 72771), (381, 57109), (573, 37973), (897, 24257), (1651, 13179), (2483, 8763), (2921, 7449), (4393, 4953)]