21878556

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{181}}^1\times {\mathrm{1439}}^1$

素因数の和:1634

約数の個数: 48

約数和(自身を含む): 58705920

約数和(自身を除く): 36827364

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 181, 362, 543, 724, 1086, 1267, 1439, 2172, 2534, 2878, 3801, 4317, 5068, 5756, 7602, 8634, 10073, 15204, 17268, 20146, 30219, 40292, 60438, 120876, 260459, 520918, 781377, 1041836, 1562754, 1823213, 3125508, 3646426, 5469639, 7292852, 10939278, 21878556]

約数ペア:

[(1, 21878556), (2, 10939278), (3, 7292852), (4, 5469639), (6, 3646426), (7, 3125508), (12, 1823213), (14, 1562754), (21, 1041836), (28, 781377), (42, 520918), (84, 260459), (181, 120876), (362, 60438), (543, 40292), (724, 30219), (1086, 20146), (1267, 17268), (1439, 15204), (2172, 10073), (2534, 8634), (2878, 7602), (3801, 5756), (4317, 5068)]