21417249

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{167}}^1\times {\mathrm{197}}^1$

素因数の和:405

約数の個数: 32

約数和(自身を含む): 34062336

約数和(自身を除く): 12645087

約数列:

[1, 3, 7, 21, 31, 93, 167, 197, 217, 501, 591, 651, 1169, 1379, 3507, 4137, 5177, 6107, 15531, 18321, 32899, 36239, 42749, 98697, 108717, 128247, 230293, 690879, 1019869, 3059607, 7139083, 21417249]

約数ペア:

[(1, 21417249), (3, 7139083), (7, 3059607), (21, 1019869), (31, 690879), (93, 230293), (167, 128247), (197, 108717), (217, 98697), (501, 42749), (591, 36239), (651, 32899), (1169, 18321), (1379, 15531), (3507, 6107), (4137, 5177)]