20869000

素因数分解:

$2^3\times 5^3\times {\mathrm{41}}^1\times {\mathrm{509}}^1$

素因数の和:571

約数の個数: 64

約数和(自身を含む): 50122800

約数和(自身を除く): 29253800

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 41, 50, 82, 100, 125, 164, 200, 205, 250, 328, 410, 500, 509, 820, 1000, 1018, 1025, 1640, 2036, 2050, 2545, 4072, 4100, 5090, 5125, 8200, 10180, 10250, 12725, 20360, 20500, 20869, 25450, 41000, 41738, 50900, 63625, 83476, 101800, 104345, 127250, 166952, 208690, 254500, 417380, 509000, 521725, 834760, 1043450, 2086900, 2608625, 4173800, 5217250, 10434500, 20869000]

約数ペア:

[(1, 20869000), (2, 10434500), (4, 5217250), (5, 4173800), (8, 2608625), (10, 2086900), (20, 1043450), (25, 834760), (40, 521725), (41, 509000), (50, 417380), (82, 254500), (100, 208690), (125, 166952), (164, 127250), (200, 104345), (205, 101800), (250, 83476), (328, 63625), (410, 50900), (500, 41738), (509, 41000), (820, 25450), (1000, 20869), (1018, 20500), (1025, 20360), (1640, 12725), (2036, 10250), (2050, 10180), (2545, 8200), (4072, 5125), (4100, 5090)]