278005120

素因数分解:

$2^7\times 5^1\times {\mathrm{434383}}^1$

素因数の和:434402

約数の個数: 32

約数和(自身を含む): 664607520

約数和(自身を除く): 386602400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 434383, 868766, 1737532, 2171915, 3475064, 4343830, 6950128, 8687660, 13900256, 17375320, 27800512, 34750640, 55601024, 69501280, 139002560, 278005120]

約数ペア:

[(1, 278005120), (2, 139002560), (4, 69501280), (5, 55601024), (8, 34750640), (10, 27800512), (16, 17375320), (20, 13900256), (32, 8687660), (40, 6950128), (64, 4343830), (80, 3475064), (128, 2171915), (160, 1737532), (320, 868766), (640, 434383)]