20370500

素因数分解:

$2^2\times 5^3\times {\mathrm{131}}^1\times {\mathrm{311}}^1$

素因数の和:461

約数の個数: 48

約数和(自身を含む): 44972928

約数和(自身を除く): 24602428

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 131, 250, 262, 311, 500, 524, 622, 655, 1244, 1310, 1555, 2620, 3110, 3275, 6220, 6550, 7775, 13100, 15550, 16375, 31100, 32750, 38875, 40741, 65500, 77750, 81482, 155500, 162964, 203705, 407410, 814820, 1018525, 2037050, 4074100, 5092625, 10185250, 20370500]

約数ペア:

[(1, 20370500), (2, 10185250), (4, 5092625), (5, 4074100), (10, 2037050), (20, 1018525), (25, 814820), (50, 407410), (100, 203705), (125, 162964), (131, 155500), (250, 81482), (262, 77750), (311, 65500), (500, 40741), (524, 38875), (622, 32750), (655, 31100), (1244, 16375), (1310, 15550), (1555, 13100), (2620, 7775), (3110, 6550), (3275, 6220)]