20788600

素因数分解:

$2^3\times 5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{479}}^1$

素因数の和:533

約数の個数: 96

約数和(自身を含む): 57139200

約数和(自身を除く): 36350600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 31, 35, 40, 50, 56, 62, 70, 100, 124, 140, 155, 175, 200, 217, 248, 280, 310, 350, 434, 479, 620, 700, 775, 868, 958, 1085, 1240, 1400, 1550, 1736, 1916, 2170, 2395, 3100, 3353, 3832, 4340, 4790, 5425, 6200, 6706, 8680, 9580, 10850, 11975, 13412, 14849, 16765, 19160, 21700, 23950, 26824, 29698, 33530, 43400, 47900, 59396, 67060, 74245, 83825, 95800, 103943, 118792, 134120, 148490, 167650, 207886, 296980, 335300, 371225, 415772, 519715, 593960, 670600, 742450, 831544, 1039430, 1484900, 2078860, 2598575, 2969800, 4157720, 5197150, 10394300, 20788600]

約数ペア:

[(1, 20788600), (2, 10394300), (4, 5197150), (5, 4157720), (7, 2969800), (8, 2598575), (10, 2078860), (14, 1484900), (20, 1039430), (25, 831544), (28, 742450), (31, 670600), (35, 593960), (40, 519715), (50, 415772), (56, 371225), (62, 335300), (70, 296980), (100, 207886), (124, 167650), (140, 148490), (155, 134120), (175, 118792), (200, 103943), (217, 95800), (248, 83825), (280, 74245), (310, 67060), (350, 59396), (434, 47900), (479, 43400), (620, 33530), (700, 29698), (775, 26824), (868, 23950), (958, 21700), (1085, 19160), (1240, 16765), (1400, 14849), (1550, 13412), (1736, 11975), (1916, 10850), (2170, 9580), (2395, 8680), (3100, 6706), (3353, 6200), (3832, 5425), (4340, 4790)]