129754220

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^2\times {\mathrm{43}}^1\times {\mathrm{157}}^1$

素因数の和:271

約数の個数: 72

約数和(自身を含む): 289940112

約数和(自身を除く): 160185892

約数列:

[1, 2, 4, 5, 10, 20, 31, 43, 62, 86, 124, 155, 157, 172, 215, 310, 314, 430, 620, 628, 785, 860, 961, 1333, 1570, 1922, 2666, 3140, 3844, 4805, 4867, 5332, 6665, 6751, 9610, 9734, 13330, 13502, 19220, 19468, 24335, 26660, 27004, 33755, 41323, 48670, 67510, 82646, 97340, 135020, 150877, 165292, 206615, 209281, 301754, 413230, 418562, 603508, 754385, 826460, 837124, 1046405, 1508770, 2092810, 3017540, 4185620, 6487711, 12975422, 25950844, 32438555, 64877110, 129754220]

約数ペア:

[(1, 129754220), (2, 64877110), (4, 32438555), (5, 25950844), (10, 12975422), (20, 6487711), (31, 4185620), (43, 3017540), (62, 2092810), (86, 1508770), (124, 1046405), (155, 837124), (157, 826460), (172, 754385), (215, 603508), (310, 418562), (314, 413230), (430, 301754), (620, 209281), (628, 206615), (785, 165292), (860, 150877), (961, 135020), (1333, 97340), (1570, 82646), (1922, 67510), (2666, 48670), (3140, 41323), (3844, 33755), (4805, 27004), (4867, 26660), (5332, 24335), (6665, 19468), (6751, 19220), (9610, 13502), (9734, 13330)]