21764645

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{523}}^1$

素因数の和:605

約数の個数: 32

約数和(自身を含む): 31691520

約数和(自身を除く): 9926875

約数列:

[1, 5, 7, 29, 35, 41, 145, 203, 205, 287, 523, 1015, 1189, 1435, 2615, 3661, 5945, 8323, 15167, 18305, 21443, 41615, 75835, 106169, 107215, 150101, 530845, 621847, 750505, 3109235, 4352929, 21764645]

約数ペア:

[(1, 21764645), (5, 4352929), (7, 3109235), (29, 750505), (35, 621847), (41, 530845), (145, 150101), (203, 107215), (205, 106169), (287, 75835), (523, 41615), (1015, 21443), (1189, 18305), (1435, 15167), (2615, 8323), (3661, 5945)]