21151179

素因数分解:

$3^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{227}}^1$

素因数の和:289

約数の個数: 64

約数和(自身を含む): 39398400

約数和(自身を除く): 18247221

約数列:

[1, 3, 7, 9, 17, 21, 27, 29, 51, 63, 87, 119, 153, 189, 203, 227, 261, 357, 459, 493, 609, 681, 783, 1071, 1479, 1589, 1827, 2043, 3213, 3451, 3859, 4437, 4767, 5481, 6129, 6583, 10353, 11577, 13311, 14301, 19749, 27013, 31059, 34731, 42903, 46081, 59247, 81039, 93177, 104193, 111911, 138243, 177741, 243117, 335733, 414729, 729351, 783377, 1007199, 1244187, 2350131, 3021597, 7050393, 21151179]

約数ペア:

[(1, 21151179), (3, 7050393), (7, 3021597), (9, 2350131), (17, 1244187), (21, 1007199), (27, 783377), (29, 729351), (51, 414729), (63, 335733), (87, 243117), (119, 177741), (153, 138243), (189, 111911), (203, 104193), (227, 93177), (261, 81039), (357, 59247), (459, 46081), (493, 42903), (609, 34731), (681, 31059), (783, 27013), (1071, 19749), (1479, 14301), (1589, 13311), (1827, 11577), (2043, 10353), (3213, 6583), (3451, 6129), (3859, 5481), (4437, 4767)]