21021440

素因数分解:

$2^8\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1493}}^1$

素因数の和:1525

約数の個数: 72

約数和(自身を含む): 54967248

約数和(自身を除く): 33945808

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, 640, 704, 880, 1280, 1408, 1493, 1760, 2816, 2986, 3520, 5972, 7040, 7465, 11944, 14080, 14930, 16423, 23888, 29860, 32846, 47776, 59720, 65692, 82115, 95552, 119440, 131384, 164230, 191104, 238880, 262768, 328460, 382208, 477760, 525536, 656920, 955520, 1051072, 1313840, 1911040, 2102144, 2627680, 4204288, 5255360, 10510720, 21021440]

約数ペア:

[(1, 21021440), (2, 10510720), (4, 5255360), (5, 4204288), (8, 2627680), (10, 2102144), (11, 1911040), (16, 1313840), (20, 1051072), (22, 955520), (32, 656920), (40, 525536), (44, 477760), (55, 382208), (64, 328460), (80, 262768), (88, 238880), (110, 191104), (128, 164230), (160, 131384), (176, 119440), (220, 95552), (256, 82115), (320, 65692), (352, 59720), (440, 47776), (640, 32846), (704, 29860), (880, 23888), (1280, 16423), (1408, 14930), (1493, 14080), (1760, 11944), (2816, 7465), (2986, 7040), (3520, 5972)]