129640480

素因数分解:

$2^5\times 5^1\times {\mathrm{810253}}^1$

素因数の和:810268

約数の個数: 24

約数和(自身を含む): 306276012

約数和(自身を除く): 176635532

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 810253, 1620506, 3241012, 4051265, 6482024, 8102530, 12964048, 16205060, 25928096, 32410120, 64820240, 129640480]

約数ペア:

[(1, 129640480), (2, 64820240), (4, 32410120), (5, 25928096), (8, 16205060), (10, 12964048), (16, 8102530), (20, 6482024), (32, 4051265), (40, 3241012), (80, 1620506), (160, 810253)]