256177040

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{457459}}^1$

素因数の和:457479

約数の個数: 40

約数和(自身を含む): 680700480

約数和(自身を除く): 424523440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 457459, 914918, 1829836, 2287295, 3202213, 3659672, 4574590, 6404426, 7319344, 9149180, 12808852, 16011065, 18298360, 25617704, 32022130, 36596720, 51235408, 64044260, 128088520, 256177040]

約数ペア:

[(1, 256177040), (2, 128088520), (4, 64044260), (5, 51235408), (7, 36596720), (8, 32022130), (10, 25617704), (14, 18298360), (16, 16011065), (20, 12808852), (28, 9149180), (35, 7319344), (40, 6404426), (56, 4574590), (70, 3659672), (80, 3202213), (112, 2287295), (140, 1829836), (280, 914918), (560, 457459)]