28726480

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{18899}}^1$

素因数の和:18931

約数の個数: 40

約数和(自身を含む): 70308000

約数和(自身を除く): 41581520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 18899, 37798, 75596, 94495, 151192, 188990, 302384, 359081, 377980, 718162, 755960, 1436324, 1511920, 1795405, 2872648, 3590810, 5745296, 7181620, 14363240, 28726480]

約数ペア:

[(1, 28726480), (2, 14363240), (4, 7181620), (5, 5745296), (8, 3590810), (10, 2872648), (16, 1795405), (19, 1511920), (20, 1436324), (38, 755960), (40, 718162), (76, 377980), (80, 359081), (95, 302384), (152, 188990), (190, 151192), (304, 94495), (380, 75596), (760, 37798), (1520, 18899)]