40418080

素因数分解:

$2^5\times 5^1\times {\mathrm{157}}^1\times {\mathrm{1609}}^1$

素因数の和:1781

約数の個数: 48

約数和(自身を含む): 96155640

約数和(自身を除く): 55737560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 157, 160, 314, 628, 785, 1256, 1570, 1609, 2512, 3140, 3218, 5024, 6280, 6436, 8045, 12560, 12872, 16090, 25120, 25744, 32180, 51488, 64360, 128720, 252613, 257440, 505226, 1010452, 1263065, 2020904, 2526130, 4041808, 5052260, 8083616, 10104520, 20209040, 40418080]

約数ペア:

[(1, 40418080), (2, 20209040), (4, 10104520), (5, 8083616), (8, 5052260), (10, 4041808), (16, 2526130), (20, 2020904), (32, 1263065), (40, 1010452), (80, 505226), (157, 257440), (160, 252613), (314, 128720), (628, 64360), (785, 51488), (1256, 32180), (1570, 25744), (1609, 25120), (2512, 16090), (3140, 12872), (3218, 12560), (5024, 8045), (6280, 6436)]