278468480

素因数分解:

$2^7\times 5^1\times {\mathrm{435107}}^1$

素因数の和:435126

約数の個数: 32

約数和(自身を含む): 665715240

約数和(自身を除く): 387246760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 435107, 870214, 1740428, 2175535, 3480856, 4351070, 6961712, 8702140, 13923424, 17404280, 27846848, 34808560, 55693696, 69617120, 139234240, 278468480]

約数ペア:

[(1, 278468480), (2, 139234240), (4, 69617120), (5, 55693696), (8, 34808560), (10, 27846848), (16, 17404280), (20, 13923424), (32, 8702140), (40, 6961712), (64, 4351070), (80, 3480856), (128, 2175535), (160, 1740428), (320, 870214), (640, 435107)]