21000901299

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{181}}^1\times {\mathrm{4817}}^1$

素因数の和:5076

約数の個数: 64

約数和(自身を含む): 34120998912

約数和(自身を除く): 13120097613

約数列:

[1, 3, 7, 21, 31, 37, 93, 111, 181, 217, 259, 543, 651, 777, 1147, 1267, 3441, 3801, 4817, 5611, 6697, 8029, 14451, 16833, 20091, 24087, 33719, 39277, 46879, 101157, 117831, 140637, 149327, 178229, 207607, 447981, 534687, 622821, 871877, 1045289, 1247603, 1453249, 2615631, 3135867, 3742809, 4359747, 5525099, 6103139, 16575297, 18309417, 27028187, 32259449, 38675693, 81084561, 96778347, 116027079, 189197309, 225816143, 567591927, 677448429, 1000042919, 3000128757, 7000300433, 21000901299]

約数ペア:

[(1, 21000901299), (3, 7000300433), (7, 3000128757), (21, 1000042919), (31, 677448429), (37, 567591927), (93, 225816143), (111, 189197309), (181, 116027079), (217, 96778347), (259, 81084561), (543, 38675693), (651, 32259449), (777, 27028187), (1147, 18309417), (1267, 16575297), (3441, 6103139), (3801, 5525099), (4817, 4359747), (5611, 3742809), (6697, 3135867), (8029, 2615631), (14451, 1453249), (16833, 1247603), (20091, 1045289), (24087, 871877), (33719, 622821), (39277, 534687), (46879, 447981), (101157, 207607), (117831, 178229), (140637, 149327)]