20421162

素因数分解:

$2^1\times 3^2\times {\mathrm{19}}^1\times {\mathrm{29}}^2\times {\mathrm{71}}^1$

素因数の和:156

約数の個数: 72

約数和(自身を含む): 48915360

約数和(自身を除く): 28494198

約数列:

[1, 2, 3, 6, 9, 18, 19, 29, 38, 57, 58, 71, 87, 114, 142, 171, 174, 213, 261, 342, 426, 522, 551, 639, 841, 1102, 1278, 1349, 1653, 1682, 2059, 2523, 2698, 3306, 4047, 4118, 4959, 5046, 6177, 7569, 8094, 9918, 12141, 12354, 15138, 15979, 18531, 24282, 31958, 37062, 39121, 47937, 59711, 78242, 95874, 117363, 119422, 143811, 179133, 234726, 287622, 352089, 358266, 537399, 704178, 1074798, 1134509, 2269018, 3403527, 6807054, 10210581, 20421162]

約数ペア:

[(1, 20421162), (2, 10210581), (3, 6807054), (6, 3403527), (9, 2269018), (18, 1134509), (19, 1074798), (29, 704178), (38, 537399), (57, 358266), (58, 352089), (71, 287622), (87, 234726), (114, 179133), (142, 143811), (171, 119422), (174, 117363), (213, 95874), (261, 78242), (342, 59711), (426, 47937), (522, 39121), (551, 37062), (639, 31958), (841, 24282), (1102, 18531), (1278, 15979), (1349, 15138), (1653, 12354), (1682, 12141), (2059, 9918), (2523, 8094), (2698, 7569), (3306, 6177), (4047, 5046), (4118, 4959)]