19646288

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{72229}}^1$

素因数の和:72254

約数の個数: 20

約数和(自身を含む): 40304340

約数和(自身を除く): 20658052

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 72229, 144458, 288916, 577832, 1155664, 1227893, 2455786, 4911572, 9823144, 19646288]

約数ペア:

[(1, 19646288), (2, 9823144), (4, 4911572), (8, 2455786), (16, 1227893), (17, 1155664), (34, 577832), (68, 288916), (136, 144458), (272, 72229)]