72040040

素因数分解:

$2^3\times 5^1\times {\mathrm{311}}^1\times {\mathrm{5791}}^1$

素因数の和:6113

約数の個数: 32

約数和(自身を含む): 162639360

約数和(自身を除く): 90599320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 311, 622, 1244, 1555, 2488, 3110, 5791, 6220, 11582, 12440, 23164, 28955, 46328, 57910, 115820, 231640, 1801001, 3602002, 7204004, 9005005, 14408008, 18010010, 36020020, 72040040]

約数ペア:

[(1, 72040040), (2, 36020020), (4, 18010010), (5, 14408008), (8, 9005005), (10, 7204004), (20, 3602002), (40, 1801001), (311, 231640), (622, 115820), (1244, 57910), (1555, 46328), (2488, 28955), (3110, 23164), (5791, 12440), (6220, 11582)]