19825808

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{72889}}^1$

素因数の和:72914

約数の個数: 20

約数和(自身を含む): 40672620

約数和(自身を除く): 20846812

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 72889, 145778, 291556, 583112, 1166224, 1239113, 2478226, 4956452, 9912904, 19825808]

約数ペア:

[(1, 19825808), (2, 9912904), (4, 4956452), (8, 2478226), (16, 1239113), (17, 1166224), (34, 583112), (68, 291556), (136, 145778), (272, 72889)]