21429776

素因数分解:

$2^4\times {\mathrm{89}}^1\times {\mathrm{101}}^1\times {\mathrm{149}}^1$

素因数の和:347

約数の個数: 40

約数和(自身を含む): 42687000

約数和(自身を除く): 21257224

約数列:

[1, 2, 4, 8, 16, 89, 101, 149, 178, 202, 298, 356, 404, 596, 712, 808, 1192, 1424, 1616, 2384, 8989, 13261, 15049, 17978, 26522, 30098, 35956, 53044, 60196, 71912, 106088, 120392, 143824, 212176, 240784, 1339361, 2678722, 5357444, 10714888, 21429776]

約数ペア:

[(1, 21429776), (2, 10714888), (4, 5357444), (8, 2678722), (16, 1339361), (89, 240784), (101, 212176), (149, 143824), (178, 120392), (202, 106088), (298, 71912), (356, 60196), (404, 53044), (596, 35956), (712, 30098), (808, 26522), (1192, 17978), (1424, 15049), (1616, 13261), (2384, 8989)]