20403120

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{151}}^1\times {\mathrm{563}}^1$

素因数の和:730

約数の個数: 80

約数和(自身を含む): 63781632

約数和(自身を除く): 43378512

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 151, 240, 302, 453, 563, 604, 755, 906, 1126, 1208, 1510, 1689, 1812, 2252, 2265, 2416, 2815, 3020, 3378, 3624, 4504, 4530, 5630, 6040, 6756, 7248, 8445, 9008, 9060, 11260, 12080, 13512, 16890, 18120, 22520, 27024, 33780, 36240, 45040, 67560, 85013, 135120, 170026, 255039, 340052, 425065, 510078, 680104, 850130, 1020156, 1275195, 1360208, 1700260, 2040312, 2550390, 3400520, 4080624, 5100780, 6801040, 10201560, 20403120]

約数ペア:

[(1, 20403120), (2, 10201560), (3, 6801040), (4, 5100780), (5, 4080624), (6, 3400520), (8, 2550390), (10, 2040312), (12, 1700260), (15, 1360208), (16, 1275195), (20, 1020156), (24, 850130), (30, 680104), (40, 510078), (48, 425065), (60, 340052), (80, 255039), (120, 170026), (151, 135120), (240, 85013), (302, 67560), (453, 45040), (563, 36240), (604, 33780), (755, 27024), (906, 22520), (1126, 18120), (1208, 16890), (1510, 13512), (1689, 12080), (1812, 11260), (2252, 9060), (2265, 9008), (2416, 8445), (2815, 7248), (3020, 6756), (3378, 6040), (3624, 5630), (4504, 4530)]