31368940

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{17623}}^1$

素因数の和:17721

約数の個数: 24

約数和(自身を含む): 66618720

約数和(自身を除く): 35249780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 17623, 35246, 70492, 88115, 176230, 352460, 1568447, 3136894, 6273788, 7842235, 15684470, 31368940]

約数ペア:

[(1, 31368940), (2, 15684470), (4, 7842235), (5, 6273788), (10, 3136894), (20, 1568447), (89, 352460), (178, 176230), (356, 88115), (445, 70492), (890, 35246), (1780, 17623)]