217757360

素因数分解:

$2^4\times 5^1\times {\mathrm{1303}}^1\times {\mathrm{2089}}^1$

素因数の和:3405

約数の個数: 40

約数和(自身を含む): 506916960

約数和(自身を除く): 289159600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1303, 2089, 2606, 4178, 5212, 6515, 8356, 10424, 10445, 13030, 16712, 20848, 20890, 26060, 33424, 41780, 52120, 83560, 104240, 167120, 2721967, 5443934, 10887868, 13609835, 21775736, 27219670, 43551472, 54439340, 108878680, 217757360]

約数ペア:

[(1, 217757360), (2, 108878680), (4, 54439340), (5, 43551472), (8, 27219670), (10, 21775736), (16, 13609835), (20, 10887868), (40, 5443934), (80, 2721967), (1303, 167120), (2089, 104240), (2606, 83560), (4178, 52120), (5212, 41780), (6515, 33424), (8356, 26060), (10424, 20890), (10445, 20848), (13030, 16712)]