20922880

素因数分解:

$2^9\times 5^1\times {\mathrm{11}}^1\times {\mathrm{743}}^1$

素因数の和:777

約数の個数: 80

約数和(自身を含む): 54800064

約数和(自身を除く): 33877184

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 256, 320, 352, 440, 512, 640, 704, 743, 880, 1280, 1408, 1486, 1760, 2560, 2816, 2972, 3520, 3715, 5632, 5944, 7040, 7430, 8173, 11888, 14080, 14860, 16346, 23776, 28160, 29720, 32692, 40865, 47552, 59440, 65384, 81730, 95104, 118880, 130768, 163460, 190208, 237760, 261536, 326920, 380416, 475520, 523072, 653840, 951040, 1046144, 1307680, 1902080, 2092288, 2615360, 4184576, 5230720, 10461440, 20922880]

約数ペア:

[(1, 20922880), (2, 10461440), (4, 5230720), (5, 4184576), (8, 2615360), (10, 2092288), (11, 1902080), (16, 1307680), (20, 1046144), (22, 951040), (32, 653840), (40, 523072), (44, 475520), (55, 380416), (64, 326920), (80, 261536), (88, 237760), (110, 190208), (128, 163460), (160, 130768), (176, 118880), (220, 95104), (256, 81730), (320, 65384), (352, 59440), (440, 47552), (512, 40865), (640, 32692), (704, 29720), (743, 28160), (880, 23776), (1280, 16346), (1408, 14860), (1486, 14080), (1760, 11888), (2560, 8173), (2816, 7430), (2972, 7040), (3520, 5944), (3715, 5632)]