204577280

素因数分解:

$2^9\times 5^1\times {\mathrm{157}}^1\times {\mathrm{509}}^1$

素因数の和:689

約数の個数: 80

約数和(自身を含む): 494600040

約数和(自身を除く): 290022760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 157, 160, 256, 314, 320, 509, 512, 628, 640, 785, 1018, 1256, 1280, 1570, 2036, 2512, 2545, 2560, 3140, 4072, 5024, 5090, 6280, 8144, 10048, 10180, 12560, 16288, 20096, 20360, 25120, 32576, 40192, 40720, 50240, 65152, 79913, 80384, 81440, 100480, 130304, 159826, 162880, 200960, 260608, 319652, 325760, 399565, 401920, 639304, 651520, 799130, 1278608, 1303040, 1598260, 2557216, 3196520, 5114432, 6393040, 10228864, 12786080, 20457728, 25572160, 40915456, 51144320, 102288640, 204577280]

約数ペア:

[(1, 204577280), (2, 102288640), (4, 51144320), (5, 40915456), (8, 25572160), (10, 20457728), (16, 12786080), (20, 10228864), (32, 6393040), (40, 5114432), (64, 3196520), (80, 2557216), (128, 1598260), (157, 1303040), (160, 1278608), (256, 799130), (314, 651520), (320, 639304), (509, 401920), (512, 399565), (628, 325760), (640, 319652), (785, 260608), (1018, 200960), (1256, 162880), (1280, 159826), (1570, 130304), (2036, 100480), (2512, 81440), (2545, 80384), (2560, 79913), (3140, 65152), (4072, 50240), (5024, 40720), (5090, 40192), (6280, 32576), (8144, 25120), (10048, 20360), (10180, 20096), (12560, 16288)]