278014720

素因数分解:

$2^8\times 5^1\times {\mathrm{217199}}^1$

素因数の和:217220

約数の個数: 36

約数和(自身を含む): 665935200

約数和(自身を除く): 387920480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 217199, 434398, 868796, 1085995, 1737592, 2171990, 3475184, 4343980, 6950368, 8687960, 13900736, 17375920, 27801472, 34751840, 55602944, 69503680, 139007360, 278014720]

約数ペア:

[(1, 278014720), (2, 139007360), (4, 69503680), (5, 55602944), (8, 34751840), (10, 27801472), (16, 17375920), (20, 13900736), (32, 8687960), (40, 6950368), (64, 4343980), (80, 3475184), (128, 2171990), (160, 1737592), (256, 1085995), (320, 868796), (640, 434398), (1280, 217199)]