21139900405

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{503}}^1\times {\mathrm{13757}}^1$

素因数の和:14325

約数の個数: 32

約数和(自身を含む): 27958017024

約数和(自身を除く): 6818116619

約数列:

[1, 5, 13, 47, 65, 235, 503, 611, 2515, 3055, 6539, 13757, 23641, 32695, 68785, 118205, 178841, 307333, 646579, 894205, 1536665, 3232895, 6919771, 8405527, 34598855, 42027635, 89957023, 325229237, 449785115, 1626146185, 4227980081, 21139900405]

約数ペア:

[(1, 21139900405), (5, 4227980081), (13, 1626146185), (47, 449785115), (65, 325229237), (235, 89957023), (503, 42027635), (611, 34598855), (2515, 8405527), (3055, 6919771), (6539, 3232895), (13757, 1536665), (23641, 894205), (32695, 646579), (68785, 307333), (118205, 178841)]