20397902

素因数分解:

$2^1\times 7^1\times {\mathrm{641}}^1\times {\mathrm{2273}}^1$

素因数の和:2923

約数の個数: 16

約数和(自身を含む): 35037792

約数和(自身を除く): 14639890

約数列:

[1, 2, 7, 14, 641, 1282, 2273, 4487, 4546, 8974, 15911, 31822, 1456993, 2913986, 10198951, 20397902]

約数ペア:

[(1, 20397902), (2, 10198951), (7, 2913986), (14, 1456993), (641, 31822), (1282, 15911), (2273, 8974), (4487, 4546)]