21806768

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{22343}}^1$

素因数の和:22412

約数の個数: 20

約数和(自身を含む): 42945168

約数和(自身を除く): 21138400

約数列:

[1, 2, 4, 8, 16, 61, 122, 244, 488, 976, 22343, 44686, 89372, 178744, 357488, 1362923, 2725846, 5451692, 10903384, 21806768]

約数ペア:

[(1, 21806768), (2, 10903384), (4, 5451692), (8, 2725846), (16, 1362923), (61, 357488), (122, 178744), (244, 89372), (488, 44686), (976, 22343)]