21286190

素因数分解:

$2^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{16249}}^1$

素因数の和:16387

約数の個数: 16

約数和(自身を含む): 38610000

約数和(自身を除く): 17323810

約数列:

[1, 2, 5, 10, 131, 262, 655, 1310, 16249, 32498, 81245, 162490, 2128619, 4257238, 10643095, 21286190]

約数ペア:

[(1, 21286190), (2, 10643095), (5, 4257238), (10, 2128619), (131, 162490), (262, 81245), (655, 32498), (1310, 16249)]