19659616

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{509}}^1$

素因数の和:607

約数の個数: 48

約数和(自身を含む): 41640480

約数和(自身を除く): 21980864

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 68, 71, 136, 142, 272, 284, 509, 544, 568, 1018, 1136, 1207, 2036, 2272, 2414, 4072, 4828, 8144, 8653, 9656, 16288, 17306, 19312, 34612, 36139, 38624, 69224, 72278, 138448, 144556, 276896, 289112, 578224, 614363, 1156448, 1228726, 2457452, 4914904, 9829808, 19659616]

約数ペア:

[(1, 19659616), (2, 9829808), (4, 4914904), (8, 2457452), (16, 1228726), (17, 1156448), (32, 614363), (34, 578224), (68, 289112), (71, 276896), (136, 144556), (142, 138448), (272, 72278), (284, 69224), (509, 38624), (544, 36139), (568, 34612), (1018, 19312), (1136, 17306), (1207, 16288), (2036, 9656), (2272, 8653), (2414, 8144), (4072, 4828)]