21054400

素因数分解:

$2^6\times 5^2\times {\mathrm{13159}}^1$

素因数の和:13181

約数の個数: 42

約数和(自身を含む): 51810920

約数和(自身を除く): 30756520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 160, 200, 320, 400, 800, 1600, 13159, 26318, 52636, 65795, 105272, 131590, 210544, 263180, 328975, 421088, 526360, 657950, 842176, 1052720, 1315900, 2105440, 2631800, 4210880, 5263600, 10527200, 21054400]

約数ペア:

[(1, 21054400), (2, 10527200), (4, 5263600), (5, 4210880), (8, 2631800), (10, 2105440), (16, 1315900), (20, 1052720), (25, 842176), (32, 657950), (40, 526360), (50, 421088), (64, 328975), (80, 263180), (100, 210544), (160, 131590), (200, 105272), (320, 65795), (400, 52636), (800, 26318), (1600, 13159)]