21097548

素因数分解:

$2^2\times 3^2\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{337}}^1$

素因数の和:431

約数の個数: 72

約数和(自身を含む): 56102592

約数和(自身を除く): 35005044

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 37, 47, 74, 94, 111, 141, 148, 188, 222, 282, 333, 337, 423, 444, 564, 666, 674, 846, 1011, 1332, 1348, 1692, 1739, 2022, 3033, 3478, 4044, 5217, 6066, 6956, 10434, 12132, 12469, 15651, 15839, 20868, 24938, 31302, 31678, 37407, 47517, 49876, 62604, 63356, 74814, 95034, 112221, 142551, 149628, 190068, 224442, 285102, 448884, 570204, 586043, 1172086, 1758129, 2344172, 3516258, 5274387, 7032516, 10548774, 21097548]

約数ペア:

[(1, 21097548), (2, 10548774), (3, 7032516), (4, 5274387), (6, 3516258), (9, 2344172), (12, 1758129), (18, 1172086), (36, 586043), (37, 570204), (47, 448884), (74, 285102), (94, 224442), (111, 190068), (141, 149628), (148, 142551), (188, 112221), (222, 95034), (282, 74814), (333, 63356), (337, 62604), (423, 49876), (444, 47517), (564, 37407), (666, 31678), (674, 31302), (846, 24938), (1011, 20868), (1332, 15839), (1348, 15651), (1692, 12469), (1739, 12132), (2022, 10434), (3033, 6956), (3478, 6066), (4044, 5217)]