20401645

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{12791}}^1$

素因数の和:12836

約数の個数: 16

約数和(自身を含む): 27630720

約数和(自身を除く): 7229075

約数列:

[1, 5, 11, 29, 55, 145, 319, 1595, 12791, 63955, 140701, 370939, 703505, 1854695, 4080329, 20401645]

約数ペア:

[(1, 20401645), (5, 4080329), (11, 1854695), (29, 703505), (55, 370939), (145, 140701), (319, 63955), (1595, 12791)]