80929900

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{19739}}^1$

素因数の和:19794

約数の個数: 36

約数和(自身を含む): 179910360

約数和(自身を除く): 98980460

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 164, 205, 410, 820, 1025, 2050, 4100, 19739, 39478, 78956, 98695, 197390, 394780, 493475, 809299, 986950, 1618598, 1973900, 3237196, 4046495, 8092990, 16185980, 20232475, 40464950, 80929900]

約数ペア:

[(1, 80929900), (2, 40464950), (4, 20232475), (5, 16185980), (10, 8092990), (20, 4046495), (25, 3237196), (41, 1973900), (50, 1618598), (82, 986950), (100, 809299), (164, 493475), (205, 394780), (410, 197390), (820, 98695), (1025, 78956), (2050, 39478), (4100, 19739)]