18719125

素因数分解:

$5^3\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{383}}^1$

素因数の和:438

約数の個数: 32

約数和(自身を含む): 25878528

約数和(自身を除く): 7159403

約数列:

[1, 5, 17, 23, 25, 85, 115, 125, 383, 391, 425, 575, 1915, 1955, 2125, 2875, 6511, 8809, 9575, 9775, 32555, 44045, 47875, 48875, 149753, 162775, 220225, 748765, 813875, 1101125, 3743825, 18719125]

約数ペア:

[(1, 18719125), (5, 3743825), (17, 1101125), (23, 813875), (25, 748765), (85, 220225), (115, 162775), (125, 149753), (383, 48875), (391, 47875), (425, 44045), (575, 32555), (1915, 9775), (1955, 9575), (2125, 8809), (2875, 6511)]