21279336

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{283}}^1$

素因数の和:546

約数の個数: 64

約数和(自身を含む): 57731520

約数和(自身を除く): 36452184

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 241, 283, 312, 482, 566, 723, 849, 964, 1132, 1446, 1698, 1928, 2264, 2892, 3133, 3396, 3679, 5784, 6266, 6792, 7358, 9399, 11037, 12532, 14716, 18798, 22074, 25064, 29432, 37596, 44148, 68203, 75192, 88296, 136406, 204609, 272812, 409218, 545624, 818436, 886639, 1636872, 1773278, 2659917, 3546556, 5319834, 7093112, 10639668, 21279336]

約数ペア:

[(1, 21279336), (2, 10639668), (3, 7093112), (4, 5319834), (6, 3546556), (8, 2659917), (12, 1773278), (13, 1636872), (24, 886639), (26, 818436), (39, 545624), (52, 409218), (78, 272812), (104, 204609), (156, 136406), (241, 88296), (283, 75192), (312, 68203), (482, 44148), (566, 37596), (723, 29432), (849, 25064), (964, 22074), (1132, 18798), (1446, 14716), (1698, 12532), (1928, 11037), (2264, 9399), (2892, 7358), (3133, 6792), (3396, 6266), (3679, 5784)]