21564070

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1$

素因数の和:205

約数の個数: 64

約数和(自身を含む): 44706816

約数和(自身を除く): 23142746

約数列:

[1, 2, 5, 10, 11, 22, 43, 47, 55, 86, 94, 97, 110, 194, 215, 235, 430, 470, 473, 485, 517, 946, 970, 1034, 1067, 2021, 2134, 2365, 2585, 4042, 4171, 4559, 4730, 5170, 5335, 8342, 9118, 10105, 10670, 20210, 20855, 22231, 22795, 41710, 44462, 45590, 45881, 50149, 91762, 100298, 111155, 196037, 222310, 229405, 250745, 392074, 458810, 501490, 980185, 1960370, 2156407, 4312814, 10782035, 21564070]

約数ペア:

[(1, 21564070), (2, 10782035), (5, 4312814), (10, 2156407), (11, 1960370), (22, 980185), (43, 501490), (47, 458810), (55, 392074), (86, 250745), (94, 229405), (97, 222310), (110, 196037), (194, 111155), (215, 100298), (235, 91762), (430, 50149), (470, 45881), (473, 45590), (485, 44462), (517, 41710), (946, 22795), (970, 22231), (1034, 20855), (1067, 20210), (2021, 10670), (2134, 10105), (2365, 9118), (2585, 8342), (4042, 5335), (4171, 5170), (4559, 4730)]