20003600

素因数分解:

$2^4\times 5^2\times {\mathrm{43}}^1\times {\mathrm{1163}}^1$

素因数の和:1224

約数の個数: 60

約数和(自身を含む): 49218576

約数和(自身を除く): 29214976

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 43, 50, 80, 86, 100, 172, 200, 215, 344, 400, 430, 688, 860, 1075, 1163, 1720, 2150, 2326, 3440, 4300, 4652, 5815, 8600, 9304, 11630, 17200, 18608, 23260, 29075, 46520, 50009, 58150, 93040, 100018, 116300, 200036, 232600, 250045, 400072, 465200, 500090, 800144, 1000180, 1250225, 2000360, 2500450, 4000720, 5000900, 10001800, 20003600]

約数ペア:

[(1, 20003600), (2, 10001800), (4, 5000900), (5, 4000720), (8, 2500450), (10, 2000360), (16, 1250225), (20, 1000180), (25, 800144), (40, 500090), (43, 465200), (50, 400072), (80, 250045), (86, 232600), (100, 200036), (172, 116300), (200, 100018), (215, 93040), (344, 58150), (400, 50009), (430, 46520), (688, 29075), (860, 23260), (1075, 18608), (1163, 17200), (1720, 11630), (2150, 9304), (2326, 8600), (3440, 5815), (4300, 4652)]