21541905

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{6217}}^1$

素因数の和:6246

約数の個数: 48

約数和(自身を含む): 46560384

約数和(自身を除く): 25018479

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 33, 35, 45, 55, 63, 77, 99, 105, 165, 231, 315, 385, 495, 693, 1155, 3465, 6217, 18651, 31085, 43519, 55953, 68387, 93255, 130557, 205161, 217595, 279765, 341935, 391671, 478709, 615483, 652785, 1025805, 1436127, 1958355, 2393545, 3077415, 4308381, 7180635, 21541905]

約数ペア:

[(1, 21541905), (3, 7180635), (5, 4308381), (7, 3077415), (9, 2393545), (11, 1958355), (15, 1436127), (21, 1025805), (33, 652785), (35, 615483), (45, 478709), (55, 391671), (63, 341935), (77, 279765), (99, 217595), (105, 205161), (165, 130557), (231, 93255), (315, 68387), (385, 55953), (495, 43519), (693, 31085), (1155, 18651), (3465, 6217)]