290140

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{163}}^1$

素因数の和:261

約数の個数: 24

約数和(自身を含む): 619920

約数和(自身を除く): 329780

約数列:

[1, 2, 4, 5, 10, 20, 89, 163, 178, 326, 356, 445, 652, 815, 890, 1630, 1780, 3260, 14507, 29014, 58028, 72535, 145070, 290140]

約数ペア:

[(1, 290140), (2, 145070), (4, 72535), (5, 58028), (10, 29014), (20, 14507), (89, 3260), (163, 1780), (178, 1630), (326, 890), (356, 815), (445, 652)]