20387000

素因数分解:

$2^3\times 5^3\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1$

素因数の和:106

約数の個数: 128

約数和(自身を含む): 53352000

約数和(自身を除く): 32965000

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 25, 29, 37, 38, 40, 50, 58, 74, 76, 95, 100, 116, 125, 145, 148, 152, 185, 190, 200, 232, 250, 290, 296, 370, 380, 475, 500, 551, 580, 703, 725, 740, 760, 925, 950, 1000, 1073, 1102, 1160, 1406, 1450, 1480, 1850, 1900, 2146, 2204, 2375, 2755, 2812, 2900, 3515, 3625, 3700, 3800, 4292, 4408, 4625, 4750, 5365, 5510, 5624, 5800, 7030, 7250, 7400, 8584, 9250, 9500, 10730, 11020, 13775, 14060, 14500, 17575, 18500, 19000, 20387, 21460, 22040, 26825, 27550, 28120, 29000, 35150, 37000, 40774, 42920, 53650, 55100, 68875, 70300, 81548, 87875, 101935, 107300, 110200, 134125, 137750, 140600, 163096, 175750, 203870, 214600, 268250, 275500, 351500, 407740, 509675, 536500, 551000, 703000, 815480, 1019350, 1073000, 2038700, 2548375, 4077400, 5096750, 10193500, 20387000]

約数ペア:

[(1, 20387000), (2, 10193500), (4, 5096750), (5, 4077400), (8, 2548375), (10, 2038700), (19, 1073000), (20, 1019350), (25, 815480), (29, 703000), (37, 551000), (38, 536500), (40, 509675), (50, 407740), (58, 351500), (74, 275500), (76, 268250), (95, 214600), (100, 203870), (116, 175750), (125, 163096), (145, 140600), (148, 137750), (152, 134125), (185, 110200), (190, 107300), (200, 101935), (232, 87875), (250, 81548), (290, 70300), (296, 68875), (370, 55100), (380, 53650), (475, 42920), (500, 40774), (551, 37000), (580, 35150), (703, 29000), (725, 28120), (740, 27550), (760, 26825), (925, 22040), (950, 21460), (1000, 20387), (1073, 19000), (1102, 18500), (1160, 17575), (1406, 14500), (1450, 14060), (1480, 13775), (1850, 11020), (1900, 10730), (2146, 9500), (2204, 9250), (2375, 8584), (2755, 7400), (2812, 7250), (2900, 7030), (3515, 5800), (3625, 5624), (3700, 5510), (3800, 5365), (4292, 4750), (4408, 4625)]