21986013

素因数分解:

$3^1\times 7^1\times {\mathrm{331}}^1\times {\mathrm{3163}}^1$

素因数の和:3504

約数の個数: 16

約数和(自身を含む): 33614336

約数和(自身を除く): 11628323

約数列:

[1, 3, 7, 21, 331, 993, 2317, 3163, 6951, 9489, 22141, 66423, 1046953, 3140859, 7328671, 21986013]

約数ペア:

[(1, 21986013), (3, 7328671), (7, 3140859), (21, 1046953), (331, 66423), (993, 22141), (2317, 9489), (3163, 6951)]