669711920

素因数分解:

$2^4\times 5^1\times {\mathrm{8371399}}^1$

素因数の和:8371412

約数の個数: 20

約数和(自身を含む): 1557080400

約数和(自身を除く): 887368480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 8371399, 16742798, 33485596, 41856995, 66971192, 83713990, 133942384, 167427980, 334855960, 669711920]

約数ペア:

[(1, 669711920), (2, 334855960), (4, 167427980), (5, 133942384), (8, 83713990), (10, 66971192), (16, 41856995), (20, 33485596), (40, 16742798), (80, 8371399)]