21000339393

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1291}}^1\times {\mathrm{15901}}^1$

素因数の和:17237

約数の個数: 32

約数和(自身を含む): 31557709824

約数和(自身を除く): 10557370431

約数列:

[1, 3, 11, 31, 33, 93, 341, 1023, 1291, 3873, 14201, 15901, 40021, 42603, 47703, 120063, 174911, 440231, 492931, 524733, 1320693, 1478793, 5422241, 16266723, 20528191, 61584573, 225810101, 636373921, 677430303, 1909121763, 7000113131, 21000339393]

約数ペア:

[(1, 21000339393), (3, 7000113131), (11, 1909121763), (31, 677430303), (33, 636373921), (93, 225810101), (341, 61584573), (1023, 20528191), (1291, 16266723), (3873, 5422241), (14201, 1478793), (15901, 1320693), (40021, 524733), (42603, 492931), (47703, 440231), (120063, 174911)]