20364561

素因数分解:

$3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{107}}^1$

素因数の和:195

約数の個数: 64

約数和(自身を含む): 37324800

約数和(自身を除く): 16960239

約数列:

[1, 3, 7, 9, 19, 21, 27, 53, 57, 63, 107, 133, 159, 171, 189, 321, 371, 399, 477, 513, 749, 963, 1007, 1113, 1197, 1431, 2033, 2247, 2889, 3021, 3339, 3591, 5671, 6099, 6741, 7049, 9063, 10017, 14231, 17013, 18297, 20223, 21147, 27189, 39697, 42693, 51039, 54891, 63441, 107749, 119091, 128079, 153117, 190323, 323247, 357273, 384237, 754243, 969741, 1071819, 2262729, 2909223, 6788187, 20364561]

約数ペア:

[(1, 20364561), (3, 6788187), (7, 2909223), (9, 2262729), (19, 1071819), (21, 969741), (27, 754243), (53, 384237), (57, 357273), (63, 323247), (107, 190323), (133, 153117), (159, 128079), (171, 119091), (189, 107749), (321, 63441), (371, 54891), (399, 51039), (477, 42693), (513, 39697), (749, 27189), (963, 21147), (1007, 20223), (1113, 18297), (1197, 17013), (1431, 14231), (2033, 10017), (2247, 9063), (2889, 7049), (3021, 6741), (3339, 6099), (3591, 5671)]