21690438

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{353}}^1$

素因数の和:402

約数の個数: 96

約数和(自身を含む): 58112640

約数和(自身を除く): 36422202

約数列:

[1, 2, 3, 6, 7, 11, 14, 19, 21, 22, 33, 38, 42, 49, 57, 66, 77, 98, 114, 133, 147, 154, 209, 231, 266, 294, 353, 399, 418, 462, 539, 627, 706, 798, 931, 1059, 1078, 1254, 1463, 1617, 1862, 2118, 2471, 2793, 2926, 3234, 3883, 4389, 4942, 5586, 6707, 7413, 7766, 8778, 10241, 11649, 13414, 14826, 17297, 20121, 20482, 23298, 27181, 30723, 34594, 40242, 46949, 51891, 54362, 61446, 73777, 81543, 93898, 103782, 140847, 147554, 163086, 190267, 221331, 281694, 328643, 380534, 442662, 516439, 570801, 657286, 985929, 1032878, 1141602, 1549317, 1971858, 3098634, 3615073, 7230146, 10845219, 21690438]

約数ペア:

[(1, 21690438), (2, 10845219), (3, 7230146), (6, 3615073), (7, 3098634), (11, 1971858), (14, 1549317), (19, 1141602), (21, 1032878), (22, 985929), (33, 657286), (38, 570801), (42, 516439), (49, 442662), (57, 380534), (66, 328643), (77, 281694), (98, 221331), (114, 190267), (133, 163086), (147, 147554), (154, 140847), (209, 103782), (231, 93898), (266, 81543), (294, 73777), (353, 61446), (399, 54362), (418, 51891), (462, 46949), (539, 40242), (627, 34594), (706, 30723), (798, 27181), (931, 23298), (1059, 20482), (1078, 20121), (1254, 17297), (1463, 14826), (1617, 13414), (1862, 11649), (2118, 10241), (2471, 8778), (2793, 7766), (2926, 7413), (3234, 6707), (3883, 5586), (4389, 4942)]