20123104

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{521}}^1$

素因数の和:619

約数の個数: 48

約数和(自身を含む): 42620256

約数和(自身を除く): 22497152

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 68, 71, 136, 142, 272, 284, 521, 544, 568, 1042, 1136, 1207, 2084, 2272, 2414, 4168, 4828, 8336, 8857, 9656, 16672, 17714, 19312, 35428, 36991, 38624, 70856, 73982, 141712, 147964, 283424, 295928, 591856, 628847, 1183712, 1257694, 2515388, 5030776, 10061552, 20123104]

約数ペア:

[(1, 20123104), (2, 10061552), (4, 5030776), (8, 2515388), (16, 1257694), (17, 1183712), (32, 628847), (34, 591856), (68, 295928), (71, 283424), (136, 147964), (142, 141712), (272, 73982), (284, 70856), (521, 38624), (544, 36991), (568, 35428), (1042, 19312), (1136, 17714), (1207, 16672), (2084, 9656), (2272, 8857), (2414, 8336), (4168, 4828)]