21087656

素因数分解:

$2^3\times {\mathrm{73}}^1\times {\mathrm{36109}}^1$

素因数の和:36188

約数の個数: 16

約数和(自身を含む): 40082100

約数和(自身を除く): 18994444

約数列:

[1, 2, 4, 8, 73, 146, 292, 584, 36109, 72218, 144436, 288872, 2635957, 5271914, 10543828, 21087656]

約数ペア:

[(1, 21087656), (2, 10543828), (4, 5271914), (8, 2635957), (73, 288872), (146, 144436), (292, 72218), (584, 36109)]