21919040

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{479}}^1$

素因数の和:520

約数の個数: 112

約数和(自身を含む): 61447680

約数和(自身を除く): 39528640

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 32, 40, 44, 52, 55, 64, 65, 80, 88, 104, 110, 130, 143, 160, 176, 208, 220, 260, 286, 320, 352, 416, 440, 479, 520, 572, 704, 715, 832, 880, 958, 1040, 1144, 1430, 1760, 1916, 2080, 2288, 2395, 2860, 3520, 3832, 4160, 4576, 4790, 5269, 5720, 6227, 7664, 9152, 9580, 10538, 11440, 12454, 15328, 19160, 21076, 22880, 24908, 26345, 30656, 31135, 38320, 42152, 45760, 49816, 52690, 62270, 68497, 76640, 84304, 99632, 105380, 124540, 136994, 153280, 168608, 199264, 210760, 249080, 273988, 337216, 342485, 398528, 421520, 498160, 547976, 684970, 843040, 996320, 1095952, 1369940, 1686080, 1992640, 2191904, 2739880, 4383808, 5479760, 10959520, 21919040]

約数ペア:

[(1, 21919040), (2, 10959520), (4, 5479760), (5, 4383808), (8, 2739880), (10, 2191904), (11, 1992640), (13, 1686080), (16, 1369940), (20, 1095952), (22, 996320), (26, 843040), (32, 684970), (40, 547976), (44, 498160), (52, 421520), (55, 398528), (64, 342485), (65, 337216), (80, 273988), (88, 249080), (104, 210760), (110, 199264), (130, 168608), (143, 153280), (160, 136994), (176, 124540), (208, 105380), (220, 99632), (260, 84304), (286, 76640), (320, 68497), (352, 62270), (416, 52690), (440, 49816), (479, 45760), (520, 42152), (572, 38320), (704, 31135), (715, 30656), (832, 26345), (880, 24908), (958, 22880), (1040, 21076), (1144, 19160), (1430, 15328), (1760, 12454), (1916, 11440), (2080, 10538), (2288, 9580), (2395, 9152), (2860, 7664), (3520, 6227), (3832, 5720), (4160, 5269), (4576, 4790)]