12725000

素因数分解:

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

素因数の和:540

約数の個数: 48

約数和(自身を含む): 29880900

約数和(自身を除く): 17155900

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 509, 625, 1000, 1018, 1250, 2036, 2500, 2545, 3125, 4072, 5000, 5090, 6250, 10180, 12500, 12725, 20360, 25000, 25450, 50900, 63625, 101800, 127250, 254500, 318125, 509000, 636250, 1272500, 1590625, 2545000, 3181250, 6362500, 12725000]

約数ペア:

[(1, 12725000), (2, 6362500), (4, 3181250), (5, 2545000), (8, 1590625), (10, 1272500), (20, 636250), (25, 509000), (40, 318125), (50, 254500), (100, 127250), (125, 101800), (200, 63625), (250, 50900), (500, 25450), (509, 25000), (625, 20360), (1000, 12725), (1018, 12500), (1250, 10180), (2036, 6250), (2500, 5090), (2545, 5000), (3125, 4072)]