18780112

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{90289}}^1$

素因数の和:90310

約数の個数: 20

約数和(自身を含む): 39185860

約数和(自身を除く): 20405748

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 90289, 180578, 361156, 722312, 1173757, 1444624, 2347514, 4695028, 9390056, 18780112]

約数ペア:

[(1, 18780112), (2, 9390056), (4, 4695028), (8, 2347514), (13, 1444624), (16, 1173757), (26, 722312), (52, 361156), (104, 180578), (208, 90289)]