21495705

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{503}}^1$

素因数の和:566

約数の個数: 64

約数和(自身を含む): 44126208

約数和(自身を除く): 22630503

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 37, 55, 77, 105, 111, 165, 185, 231, 259, 385, 407, 503, 555, 777, 1155, 1221, 1295, 1509, 2035, 2515, 2849, 3521, 3885, 5533, 6105, 7545, 8547, 10563, 14245, 16599, 17605, 18611, 27665, 38731, 42735, 52815, 55833, 82995, 93055, 116193, 130277, 193655, 204721, 279165, 390831, 580965, 614163, 651385, 1023605, 1433047, 1954155, 3070815, 4299141, 7165235, 21495705]

約数ペア:

[(1, 21495705), (3, 7165235), (5, 4299141), (7, 3070815), (11, 1954155), (15, 1433047), (21, 1023605), (33, 651385), (35, 614163), (37, 580965), (55, 390831), (77, 279165), (105, 204721), (111, 193655), (165, 130277), (185, 116193), (231, 93055), (259, 82995), (385, 55833), (407, 52815), (503, 42735), (555, 38731), (777, 27665), (1155, 18611), (1221, 17605), (1295, 16599), (1509, 14245), (2035, 10563), (2515, 8547), (2849, 7545), (3521, 6105), (3885, 5533)]