21305624

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{156659}}^1$

素因数の和:156682

約数の個数: 16

約数和(自身を含む): 42298200

約数和(自身を除く): 20992576

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 156659, 313318, 626636, 1253272, 2663203, 5326406, 10652812, 21305624]

約数ペア:

[(1, 21305624), (2, 10652812), (4, 5326406), (8, 2663203), (17, 1253272), (34, 626636), (68, 313318), (136, 156659)]