21577335

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{283}}^1$

素因数の和:344

約数の個数: 64

約数和(自身を含む): 41223168

約数和(自身を除く): 19645833

約数列:

[1, 3, 5, 13, 15, 17, 23, 39, 51, 65, 69, 85, 115, 195, 221, 255, 283, 299, 345, 391, 663, 849, 897, 1105, 1173, 1415, 1495, 1955, 3315, 3679, 4245, 4485, 4811, 5083, 5865, 6509, 11037, 14433, 15249, 18395, 19527, 24055, 25415, 32545, 55185, 62543, 72165, 76245, 84617, 97635, 110653, 187629, 253851, 312715, 331959, 423085, 553265, 938145, 1269255, 1438489, 1659795, 4315467, 7192445, 21577335]

約数ペア:

[(1, 21577335), (3, 7192445), (5, 4315467), (13, 1659795), (15, 1438489), (17, 1269255), (23, 938145), (39, 553265), (51, 423085), (65, 331959), (69, 312715), (85, 253851), (115, 187629), (195, 110653), (221, 97635), (255, 84617), (283, 76245), (299, 72165), (345, 62543), (391, 55185), (663, 32545), (849, 25415), (897, 24055), (1105, 19527), (1173, 18395), (1415, 15249), (1495, 14433), (1955, 11037), (3315, 6509), (3679, 5865), (4245, 5083), (4485, 4811)]