87220

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{89}}^1$

素因数の和:112

約数の個数: 36

約数和(自身を含む): 215460

約数和(自身を除く): 128240

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 89, 98, 140, 178, 196, 245, 356, 445, 490, 623, 890, 980, 1246, 1780, 2492, 3115, 4361, 6230, 8722, 12460, 17444, 21805, 43610, 87220]

約数ペア:

[(1, 87220), (2, 43610), (4, 21805), (5, 17444), (7, 12460), (10, 8722), (14, 6230), (20, 4361), (28, 3115), (35, 2492), (49, 1780), (70, 1246), (89, 980), (98, 890), (140, 623), (178, 490), (196, 445), (245, 356)]