20423008

素因数分解:

$2^5\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1$

素因数の和:271

約数の個数: 48

約数和(自身を含む): 41640480

約数和(自身を除く): 21217472

約数列:

[1, 2, 4, 8, 16, 32, 71, 89, 101, 142, 178, 202, 284, 356, 404, 568, 712, 808, 1136, 1424, 1616, 2272, 2848, 3232, 6319, 7171, 8989, 12638, 14342, 17978, 25276, 28684, 35956, 50552, 57368, 71912, 101104, 114736, 143824, 202208, 229472, 287648, 638219, 1276438, 2552876, 5105752, 10211504, 20423008]

約数ペア:

[(1, 20423008), (2, 10211504), (4, 5105752), (8, 2552876), (16, 1276438), (32, 638219), (71, 287648), (89, 229472), (101, 202208), (142, 143824), (178, 114736), (202, 101104), (284, 71912), (356, 57368), (404, 50552), (568, 35956), (712, 28684), (808, 25276), (1136, 17978), (1424, 14342), (1616, 12638), (2272, 8989), (2848, 7171), (3232, 6319)]