259546240

素因数分解:

$2^7\times 5^1\times {\mathrm{405541}}^1$

素因数の和:405560

約数の個数: 32

約数和(自身を含む): 620479260

約数和(自身を除く): 360933020

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 405541, 811082, 1622164, 2027705, 3244328, 4055410, 6488656, 8110820, 12977312, 16221640, 25954624, 32443280, 51909248, 64886560, 129773120, 259546240]

約数ペア:

[(1, 259546240), (2, 129773120), (4, 64886560), (5, 51909248), (8, 32443280), (10, 25954624), (16, 16221640), (20, 12977312), (32, 8110820), (40, 6488656), (64, 4055410), (80, 3244328), (128, 2027705), (160, 1622164), (320, 811082), (640, 405541)]