18646576

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{571}}^1$

素因数の和:749

約数の個数: 40

約数和(自身を含む): 39223184

約数和(自身を除く): 20576608

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 157, 208, 314, 571, 628, 1142, 1256, 2041, 2284, 2512, 4082, 4568, 7423, 8164, 9136, 14846, 16328, 29692, 32656, 59384, 89647, 118768, 179294, 358588, 717176, 1165411, 1434352, 2330822, 4661644, 9323288, 18646576]

約数ペア:

[(1, 18646576), (2, 9323288), (4, 4661644), (8, 2330822), (13, 1434352), (16, 1165411), (26, 717176), (52, 358588), (104, 179294), (157, 118768), (208, 89647), (314, 59384), (571, 32656), (628, 29692), (1142, 16328), (1256, 14846), (2041, 9136), (2284, 8164), (2512, 7423), (4082, 4568)]