201671420

素因数分解:

$2^2\times 5^1\times {\mathrm{641}}^1\times {\mathrm{15731}}^1$

素因数の和:16381

約数の個数: 24

約数和(自身を含む): 424197648

約数和(自身を除く): 222526228

約数列:

[1, 2, 4, 5, 10, 20, 641, 1282, 2564, 3205, 6410, 12820, 15731, 31462, 62924, 78655, 157310, 314620, 10083571, 20167142, 40334284, 50417855, 100835710, 201671420]

約数ペア:

[(1, 201671420), (2, 100835710), (4, 50417855), (5, 40334284), (10, 20167142), (20, 10083571), (641, 314620), (1282, 157310), (2564, 78655), (3205, 62924), (6410, 31462), (12820, 15731)]