21121320

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{16001}}^1$

素因数の和:16026

約数の個数: 64

約数和(自身を含む): 69128640

約数和(自身を除く): 48007320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 55, 60, 66, 88, 110, 120, 132, 165, 220, 264, 330, 440, 660, 1320, 16001, 32002, 48003, 64004, 80005, 96006, 128008, 160010, 176011, 192012, 240015, 320020, 352022, 384024, 480030, 528033, 640040, 704044, 880055, 960060, 1056066, 1408088, 1760110, 1920120, 2112132, 2640165, 3520220, 4224264, 5280330, 7040440, 10560660, 21121320]

約数ペア:

[(1, 21121320), (2, 10560660), (3, 7040440), (4, 5280330), (5, 4224264), (6, 3520220), (8, 2640165), (10, 2112132), (11, 1920120), (12, 1760110), (15, 1408088), (20, 1056066), (22, 960060), (24, 880055), (30, 704044), (33, 640040), (40, 528033), (44, 480030), (55, 384024), (60, 352022), (66, 320020), (88, 240015), (110, 192012), (120, 176011), (132, 160010), (165, 128008), (220, 96006), (264, 80005), (330, 64004), (440, 48003), (660, 32002), (1320, 16001)]