21284522

素因数分解:

$2^1\times 7^3\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1$

素因数の和:136

約数の個数: 64

約数和(自身を含む): 41472000

約数和(自身を除く): 20187478

約数列:

[1, 2, 7, 14, 19, 23, 38, 46, 49, 71, 98, 133, 142, 161, 266, 322, 343, 437, 497, 686, 874, 931, 994, 1127, 1349, 1633, 1862, 2254, 2698, 3059, 3266, 3479, 6118, 6517, 6958, 7889, 9443, 11431, 13034, 15778, 18886, 21413, 22862, 24353, 31027, 42826, 48706, 62054, 66101, 80017, 132202, 149891, 160034, 217189, 299782, 434378, 462707, 560119, 925414, 1120238, 1520323, 3040646, 10642261, 21284522]

約数ペア:

[(1, 21284522), (2, 10642261), (7, 3040646), (14, 1520323), (19, 1120238), (23, 925414), (38, 560119), (46, 462707), (49, 434378), (71, 299782), (98, 217189), (133, 160034), (142, 149891), (161, 132202), (266, 80017), (322, 66101), (343, 62054), (437, 48706), (497, 42826), (686, 31027), (874, 24353), (931, 22862), (994, 21413), (1127, 18886), (1349, 15778), (1633, 13034), (1862, 11431), (2254, 9443), (2698, 7889), (3059, 6958), (3266, 6517), (3479, 6118)]