18811000

素因数分解:

$2^3\times 5^3\times {\mathrm{13}}^1\times {\mathrm{1447}}^1$

素因数の和:1481

約数の個数: 64

約数和(自身を含む): 47436480

約数和(自身を除く): 28625480

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 125, 130, 200, 250, 260, 325, 500, 520, 650, 1000, 1300, 1447, 1625, 2600, 2894, 3250, 5788, 6500, 7235, 11576, 13000, 14470, 18811, 28940, 36175, 37622, 57880, 72350, 75244, 94055, 144700, 150488, 180875, 188110, 289400, 361750, 376220, 470275, 723500, 752440, 940550, 1447000, 1881100, 2351375, 3762200, 4702750, 9405500, 18811000]

約数ペア:

[(1, 18811000), (2, 9405500), (4, 4702750), (5, 3762200), (8, 2351375), (10, 1881100), (13, 1447000), (20, 940550), (25, 752440), (26, 723500), (40, 470275), (50, 376220), (52, 361750), (65, 289400), (100, 188110), (104, 180875), (125, 150488), (130, 144700), (200, 94055), (250, 75244), (260, 72350), (325, 57880), (500, 37622), (520, 36175), (650, 28940), (1000, 18811), (1300, 14470), (1447, 13000), (1625, 11576), (2600, 7235), (2894, 6500), (3250, 5788)]