21939986

素因数分解:

$2^1\times {\mathrm{53}}^1\times {\mathrm{263}}^1\times {\mathrm{787}}^1$

素因数の和:1105

約数の個数: 16

約数和(自身を含む): 33701184

約数和(自身を除く): 11761198

約数列:

[1, 2, 53, 106, 263, 526, 787, 1574, 13939, 27878, 41711, 83422, 206981, 413962, 10969993, 21939986]

約数ペア:

[(1, 21939986), (2, 10969993), (53, 413962), (106, 206981), (263, 83422), (526, 41711), (787, 27878), (1574, 13939)]