20984480

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{11923}}^1$

素因数の和:11949

約数の個数: 48

約数和(自身を含む): 54087264

約数和(自身を除く): 33102784

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 11923, 23846, 47692, 59615, 95384, 119230, 131153, 190768, 238460, 262306, 381536, 476920, 524612, 655765, 953840, 1049224, 1311530, 1907680, 2098448, 2623060, 4196896, 5246120, 10492240, 20984480]

約数ペア:

[(1, 20984480), (2, 10492240), (4, 5246120), (5, 4196896), (8, 2623060), (10, 2098448), (11, 1907680), (16, 1311530), (20, 1049224), (22, 953840), (32, 655765), (40, 524612), (44, 476920), (55, 381536), (80, 262306), (88, 238460), (110, 190768), (160, 131153), (176, 119230), (220, 95384), (352, 59615), (440, 47692), (880, 23846), (1760, 11923)]