81689972

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{224423}}^1$

素因数の和:224447

約数の個数: 24

約数和(自身を含む): 175948416

約数和(自身を除く): 94258444

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 182, 364, 224423, 448846, 897692, 1570961, 2917499, 3141922, 5834998, 6283844, 11669996, 20422493, 40844986, 81689972]

約数ペア:

[(1, 81689972), (2, 40844986), (4, 20422493), (7, 11669996), (13, 6283844), (14, 5834998), (26, 3141922), (28, 2917499), (52, 1570961), (91, 897692), (182, 448846), (364, 224423)]