393340415

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{199}}^1\times {\mathrm{647}}^1$

素因数の和:911

約数の個数: 32

約数和(自身を含む): 522547200

約数和(自身を除く): 129206785

約数列:

[1, 5, 13, 47, 65, 199, 235, 611, 647, 995, 2587, 3055, 3235, 8411, 9353, 12935, 30409, 42055, 46765, 121589, 128753, 152045, 395317, 607945, 643765, 1673789, 1976585, 6051391, 8368945, 30256955, 78668083, 393340415]

約数ペア:

[(1, 393340415), (5, 78668083), (13, 30256955), (47, 8368945), (65, 6051391), (199, 1976585), (235, 1673789), (611, 643765), (647, 607945), (995, 395317), (2587, 152045), (3055, 128753), (3235, 121589), (8411, 46765), (9353, 42055), (12935, 30409)]