551731160

素因数分解:

$2^3\times 5^1\times {\mathrm{1997}}^1\times {\mathrm{6907}}^1$

素因数の和:8915

約数の個数: 32

約数和(自身を含む): 1242196560

約数和(自身を除く): 690465400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1997, 3994, 6907, 7988, 9985, 13814, 15976, 19970, 27628, 34535, 39940, 55256, 69070, 79880, 138140, 276280, 13793279, 27586558, 55173116, 68966395, 110346232, 137932790, 275865580, 551731160]

約数ペア:

[(1, 551731160), (2, 275865580), (4, 137932790), (5, 110346232), (8, 68966395), (10, 55173116), (20, 27586558), (40, 13793279), (1997, 276280), (3994, 138140), (6907, 79880), (7988, 69070), (9985, 55256), (13814, 39940), (15976, 34535), (19970, 27628)]