20347215

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{11399}}^1$

素因数の和:11431

約数の個数: 32

約数和(自身を含む): 39398400

約数和(自身を除く): 19051185

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 51, 85, 105, 119, 255, 357, 595, 1785, 11399, 34197, 56995, 79793, 170985, 193783, 239379, 398965, 581349, 968915, 1196895, 1356481, 2906745, 4069443, 6782405, 20347215]

約数ペア:

[(1, 20347215), (3, 6782405), (5, 4069443), (7, 2906745), (15, 1356481), (17, 1196895), (21, 968915), (35, 581349), (51, 398965), (85, 239379), (105, 193783), (119, 170985), (255, 79793), (357, 56995), (595, 34197), (1785, 11399)]