28509904

素因数分解:

$2^4\times {\mathrm{89}}^1\times {\mathrm{20021}}^1$

素因数の和:20118

約数の個数: 20

約数和(自身を含む): 55861380

約数和(自身を除く): 27351476

約数列:

[1, 2, 4, 8, 16, 89, 178, 356, 712, 1424, 20021, 40042, 80084, 160168, 320336, 1781869, 3563738, 7127476, 14254952, 28509904]

約数ペア:

[(1, 28509904), (2, 14254952), (4, 7127476), (8, 3563738), (16, 1781869), (89, 320336), (178, 160168), (356, 80084), (712, 40042), (1424, 20021)]