20654000

素因数分解:

$2^4\times 5^3\times {\mathrm{23}}^1\times {\mathrm{449}}^1$

素因数の和:495

約数の個数: 80

約数和(自身を含む): 52228800

約数和(自身を除く): 31574800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 25, 40, 46, 50, 80, 92, 100, 115, 125, 184, 200, 230, 250, 368, 400, 449, 460, 500, 575, 898, 920, 1000, 1150, 1796, 1840, 2000, 2245, 2300, 2875, 3592, 4490, 4600, 5750, 7184, 8980, 9200, 10327, 11225, 11500, 17960, 20654, 22450, 23000, 35920, 41308, 44900, 46000, 51635, 56125, 82616, 89800, 103270, 112250, 165232, 179600, 206540, 224500, 258175, 413080, 449000, 516350, 826160, 898000, 1032700, 1290875, 2065400, 2581750, 4130800, 5163500, 10327000, 20654000]

約数ペア:

[(1, 20654000), (2, 10327000), (4, 5163500), (5, 4130800), (8, 2581750), (10, 2065400), (16, 1290875), (20, 1032700), (23, 898000), (25, 826160), (40, 516350), (46, 449000), (50, 413080), (80, 258175), (92, 224500), (100, 206540), (115, 179600), (125, 165232), (184, 112250), (200, 103270), (230, 89800), (250, 82616), (368, 56125), (400, 51635), (449, 46000), (460, 44900), (500, 41308), (575, 35920), (898, 23000), (920, 22450), (1000, 20654), (1150, 17960), (1796, 11500), (1840, 11225), (2000, 10327), (2245, 9200), (2300, 8980), (2875, 7184), (3592, 5750), (4490, 4600)]