25123180

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1\times {\mathrm{223}}^1$

素因数の和:406

約数の個数: 48

約数和(自身を含む): 54641664

約数和(自身を除く): 29518484

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 131, 172, 215, 223, 262, 430, 446, 524, 655, 860, 892, 1115, 1310, 2230, 2620, 4460, 5633, 9589, 11266, 19178, 22532, 28165, 29213, 38356, 47945, 56330, 58426, 95890, 112660, 116852, 146065, 191780, 292130, 584260, 1256159, 2512318, 5024636, 6280795, 12561590, 25123180]

約数ペア:

[(1, 25123180), (2, 12561590), (4, 6280795), (5, 5024636), (10, 2512318), (20, 1256159), (43, 584260), (86, 292130), (131, 191780), (172, 146065), (215, 116852), (223, 112660), (262, 95890), (430, 58426), (446, 56330), (524, 47945), (655, 38356), (860, 29213), (892, 28165), (1115, 22532), (1310, 19178), (2230, 11266), (2620, 9589), (4460, 5633)]