259834240

素因数分解:

$2^7\times 5^1\times {\mathrm{405991}}^1$

素因数の和:406010

約数の個数: 32

約数和(自身を含む): 621167760

約数和(自身を除く): 361333520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 405991, 811982, 1623964, 2029955, 3247928, 4059910, 6495856, 8119820, 12991712, 16239640, 25983424, 32479280, 51966848, 64958560, 129917120, 259834240]

約数ペア:

[(1, 259834240), (2, 129917120), (4, 64958560), (5, 51966848), (8, 32479280), (10, 25983424), (16, 16239640), (20, 12991712), (32, 8119820), (40, 6495856), (64, 4059910), (80, 3247928), (128, 2029955), (160, 1623964), (320, 811982), (640, 405991)]