72147649

素因数分解:

$7^4\times {\mathrm{151}}^1\times {\mathrm{199}}^1$

素因数の和:378

約数の個数: 20

約数和(自身を含む): 85150400

約数和(自身を除く): 13002751

約数列:

[1, 7, 49, 151, 199, 343, 1057, 1393, 2401, 7399, 9751, 30049, 51793, 68257, 210343, 362551, 477799, 1472401, 10306807, 72147649]

約数ペア:

[(1, 72147649), (7, 10306807), (49, 1472401), (151, 477799), (199, 362551), (343, 210343), (1057, 68257), (1393, 51793), (2401, 30049), (7399, 9751)]