20498000

素因数分解:

$2^4\times 5^3\times {\mathrm{37}}^1\times {\mathrm{277}}^1$

素因数の和:337

約数の個数: 80

約数和(自身を含む): 51087504

約数和(自身を除く): 30589504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 37, 40, 50, 74, 80, 100, 125, 148, 185, 200, 250, 277, 296, 370, 400, 500, 554, 592, 740, 925, 1000, 1108, 1385, 1480, 1850, 2000, 2216, 2770, 2960, 3700, 4432, 4625, 5540, 6925, 7400, 9250, 10249, 11080, 13850, 14800, 18500, 20498, 22160, 27700, 34625, 37000, 40996, 51245, 55400, 69250, 74000, 81992, 102490, 110800, 138500, 163984, 204980, 256225, 277000, 409960, 512450, 554000, 819920, 1024900, 1281125, 2049800, 2562250, 4099600, 5124500, 10249000, 20498000]

約数ペア:

[(1, 20498000), (2, 10249000), (4, 5124500), (5, 4099600), (8, 2562250), (10, 2049800), (16, 1281125), (20, 1024900), (25, 819920), (37, 554000), (40, 512450), (50, 409960), (74, 277000), (80, 256225), (100, 204980), (125, 163984), (148, 138500), (185, 110800), (200, 102490), (250, 81992), (277, 74000), (296, 69250), (370, 55400), (400, 51245), (500, 40996), (554, 37000), (592, 34625), (740, 27700), (925, 22160), (1000, 20498), (1108, 18500), (1385, 14800), (1480, 13850), (1850, 11080), (2000, 10249), (2216, 9250), (2770, 7400), (2960, 6925), (3700, 5540), (4432, 4625)]