19675408

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{337}}^1$

素因数の和:475

約数の個数: 40

約数和(自身を含む): 39606840

約数和(自身を除く): 19931432

約数列:

[1, 2, 4, 8, 16, 41, 82, 89, 164, 178, 328, 337, 356, 656, 674, 712, 1348, 1424, 2696, 3649, 5392, 7298, 13817, 14596, 27634, 29192, 29993, 55268, 58384, 59986, 110536, 119972, 221072, 239944, 479888, 1229713, 2459426, 4918852, 9837704, 19675408]

約数ペア:

[(1, 19675408), (2, 9837704), (4, 4918852), (8, 2459426), (16, 1229713), (41, 479888), (82, 239944), (89, 221072), (164, 119972), (178, 110536), (328, 59986), (337, 58384), (356, 55268), (656, 29993), (674, 29192), (712, 27634), (1348, 14596), (1424, 13817), (2696, 7298), (3649, 5392)]