21400478

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{31379}}^1$

素因数の和:31423

約数の個数: 16

約数和(自身を含む): 36149760

約数和(自身を除く): 14749282

約数列:

[1, 2, 11, 22, 31, 62, 341, 682, 31379, 62758, 345169, 690338, 972749, 1945498, 10700239, 21400478]

約数ペア:

[(1, 21400478), (2, 10700239), (11, 1945498), (22, 972749), (31, 690338), (62, 345169), (341, 62758), (682, 31379)]