20323840

素因数分解:

$2^9\times 5^1\times {\mathrm{17}}^1\times {\mathrm{467}}^1$

素因数の和:507

約数の個数: 80

約数和(自身を含む): 51706512

約数和(自身を除く): 31382672

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 128, 136, 160, 170, 256, 272, 320, 340, 467, 512, 544, 640, 680, 934, 1088, 1280, 1360, 1868, 2176, 2335, 2560, 2720, 3736, 4352, 4670, 5440, 7472, 7939, 8704, 9340, 10880, 14944, 15878, 18680, 21760, 29888, 31756, 37360, 39695, 43520, 59776, 63512, 74720, 79390, 119552, 127024, 149440, 158780, 239104, 254048, 298880, 317560, 508096, 597760, 635120, 1016192, 1195520, 1270240, 2032384, 2540480, 4064768, 5080960, 10161920, 20323840]

約数ペア:

[(1, 20323840), (2, 10161920), (4, 5080960), (5, 4064768), (8, 2540480), (10, 2032384), (16, 1270240), (17, 1195520), (20, 1016192), (32, 635120), (34, 597760), (40, 508096), (64, 317560), (68, 298880), (80, 254048), (85, 239104), (128, 158780), (136, 149440), (160, 127024), (170, 119552), (256, 79390), (272, 74720), (320, 63512), (340, 59776), (467, 43520), (512, 39695), (544, 37360), (640, 31756), (680, 29888), (934, 21760), (1088, 18680), (1280, 15878), (1360, 14944), (1868, 10880), (2176, 9340), (2335, 8704), (2560, 7939), (2720, 7472), (3736, 5440), (4352, 4670)]