28291420

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{491}}^1$

素因数の和:610

約数の個数: 48

約数和(自身を含む): 61826688

約数和(自身を除く): 33535268

約数列:

[1, 2, 4, 5, 10, 20, 43, 67, 86, 134, 172, 215, 268, 335, 430, 491, 670, 860, 982, 1340, 1964, 2455, 2881, 4910, 5762, 9820, 11524, 14405, 21113, 28810, 32897, 42226, 57620, 65794, 84452, 105565, 131588, 164485, 211130, 328970, 422260, 657940, 1414571, 2829142, 5658284, 7072855, 14145710, 28291420]

約数ペア:

[(1, 28291420), (2, 14145710), (4, 7072855), (5, 5658284), (10, 2829142), (20, 1414571), (43, 657940), (67, 422260), (86, 328970), (134, 211130), (172, 164485), (215, 131588), (268, 105565), (335, 84452), (430, 65794), (491, 57620), (670, 42226), (860, 32897), (982, 28810), (1340, 21113), (1964, 14405), (2455, 11524), (2881, 9820), (4910, 5762)]