20808800

素因数分解:

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

素因数の和:113

約数の個数: 108

約数和(自身を含む): 54957420

約数和(自身を除く): 34148620

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 32, 37, 38, 40, 50, 74, 76, 80, 95, 100, 148, 152, 160, 185, 190, 200, 296, 304, 370, 380, 400, 475, 592, 608, 703, 740, 760, 800, 925, 950, 1184, 1369, 1406, 1480, 1520, 1850, 1900, 2738, 2812, 2960, 3040, 3515, 3700, 3800, 5476, 5624, 5920, 6845, 7030, 7400, 7600, 10952, 11248, 13690, 14060, 14800, 15200, 17575, 21904, 22496, 26011, 27380, 28120, 29600, 34225, 35150, 43808, 52022, 54760, 56240, 68450, 70300, 104044, 109520, 112480, 130055, 136900, 140600, 208088, 219040, 260110, 273800, 281200, 416176, 520220, 547600, 562400, 650275, 832352, 1040440, 1095200, 1300550, 2080880, 2601100, 4161760, 5202200, 10404400, 20808800]

約数ペア:

[(1, 20808800), (2, 10404400), (4, 5202200), (5, 4161760), (8, 2601100), (10, 2080880), (16, 1300550), (19, 1095200), (20, 1040440), (25, 832352), (32, 650275), (37, 562400), (38, 547600), (40, 520220), (50, 416176), (74, 281200), (76, 273800), (80, 260110), (95, 219040), (100, 208088), (148, 140600), (152, 136900), (160, 130055), (185, 112480), (190, 109520), (200, 104044), (296, 70300), (304, 68450), (370, 56240), (380, 54760), (400, 52022), (475, 43808), (592, 35150), (608, 34225), (703, 29600), (740, 28120), (760, 27380), (800, 26011), (925, 22496), (950, 21904), (1184, 17575), (1369, 15200), (1406, 14800), (1480, 14060), (1520, 13690), (1850, 11248), (1900, 10952), (2738, 7600), (2812, 7400), (2960, 7030), (3040, 6845), (3515, 5920), (3700, 5624), (3800, 5476)]