21497856185

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{853}}^1\times {\mathrm{20407}}^1$

素因数の和:21297

約数の個数: 32

約数和(自身を含む): 29279765760

約数和(自身を除く): 7781909575

約数列:

[1, 5, 13, 19, 65, 95, 247, 853, 1235, 4265, 11089, 16207, 20407, 55445, 81035, 102035, 210691, 265291, 387733, 1053455, 1326455, 1938665, 5040529, 17407171, 25202645, 87035855, 226293223, 330736249, 1131466115, 1653681245, 4299571237, 21497856185]

約数ペア:

[(1, 21497856185), (5, 4299571237), (13, 1653681245), (19, 1131466115), (65, 330736249), (95, 226293223), (247, 87035855), (853, 25202645), (1235, 17407171), (4265, 5040529), (11089, 1938665), (16207, 1326455), (20407, 1053455), (55445, 387733), (81035, 265291), (102035, 210691)]