21561720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{3823}}^1$

素因数の和:3884

約数の個数: 64

約数和(自身を含む): 66078720

約数和(自身を除く): 44517000

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 47, 60, 94, 120, 141, 188, 235, 282, 376, 470, 564, 705, 940, 1128, 1410, 1880, 2820, 3823, 5640, 7646, 11469, 15292, 19115, 22938, 30584, 38230, 45876, 57345, 76460, 91752, 114690, 152920, 179681, 229380, 359362, 458760, 539043, 718724, 898405, 1078086, 1437448, 1796810, 2156172, 2695215, 3593620, 4312344, 5390430, 7187240, 10780860, 21561720]

約数ペア:

[(1, 21561720), (2, 10780860), (3, 7187240), (4, 5390430), (5, 4312344), (6, 3593620), (8, 2695215), (10, 2156172), (12, 1796810), (15, 1437448), (20, 1078086), (24, 898405), (30, 718724), (40, 539043), (47, 458760), (60, 359362), (94, 229380), (120, 179681), (141, 152920), (188, 114690), (235, 91752), (282, 76460), (376, 57345), (470, 45876), (564, 38230), (705, 30584), (940, 22938), (1128, 19115), (1410, 15292), (1880, 11469), (2820, 7646), (3823, 5640)]