20935000

素因数分解:

$2^3\times 5^4\times {\mathrm{53}}^1\times {\mathrm{79}}^1$

素因数の和:158

約数の個数: 80

約数和(自身を含む): 50608800

約数和(自身を除く): 29673800

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 53, 79, 100, 106, 125, 158, 200, 212, 250, 265, 316, 395, 424, 500, 530, 625, 632, 790, 1000, 1060, 1250, 1325, 1580, 1975, 2120, 2500, 2650, 3160, 3950, 4187, 5000, 5300, 6625, 7900, 8374, 9875, 10600, 13250, 15800, 16748, 19750, 20935, 26500, 33125, 33496, 39500, 41870, 49375, 53000, 66250, 79000, 83740, 98750, 104675, 132500, 167480, 197500, 209350, 265000, 395000, 418700, 523375, 837400, 1046750, 2093500, 2616875, 4187000, 5233750, 10467500, 20935000]

約数ペア:

[(1, 20935000), (2, 10467500), (4, 5233750), (5, 4187000), (8, 2616875), (10, 2093500), (20, 1046750), (25, 837400), (40, 523375), (50, 418700), (53, 395000), (79, 265000), (100, 209350), (106, 197500), (125, 167480), (158, 132500), (200, 104675), (212, 98750), (250, 83740), (265, 79000), (316, 66250), (395, 53000), (424, 49375), (500, 41870), (530, 39500), (625, 33496), (632, 33125), (790, 26500), (1000, 20935), (1060, 19750), (1250, 16748), (1325, 15800), (1580, 13250), (1975, 10600), (2120, 9875), (2500, 8374), (2650, 7900), (3160, 6625), (3950, 5300), (4187, 5000)]