19645744

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{72227}}^1$

素因数の和:72252

約数の個数: 20

約数和(自身を含む): 40303224

約数和(自身を除く): 20657480

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 72227, 144454, 288908, 577816, 1155632, 1227859, 2455718, 4911436, 9822872, 19645744]

約数ペア:

[(1, 19645744), (2, 9822872), (4, 4911436), (8, 2455718), (16, 1227859), (17, 1155632), (34, 577816), (68, 288908), (136, 144454), (272, 72227)]