18933616

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{227}}^1\times {\mathrm{401}}^1$

素因数の和:649

約数の個数: 40

約数和(自身を含む): 39778704

約数和(自身を除く): 20845088

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 227, 401, 454, 802, 908, 1604, 1816, 2951, 3208, 3632, 5213, 5902, 6416, 10426, 11804, 20852, 23608, 41704, 47216, 83408, 91027, 182054, 364108, 728216, 1183351, 1456432, 2366702, 4733404, 9466808, 18933616]

約数ペア:

[(1, 18933616), (2, 9466808), (4, 4733404), (8, 2366702), (13, 1456432), (16, 1183351), (26, 728216), (52, 364108), (104, 182054), (208, 91027), (227, 83408), (401, 47216), (454, 41704), (802, 23608), (908, 20852), (1604, 11804), (1816, 10426), (2951, 6416), (3208, 5902), (3632, 5213)]