21159376

素因数分解:

$2^4\times 7^2\times {\mathrm{137}}^1\times {\mathrm{197}}^1$

素因数の和:356

約数の個数: 60

約数和(自身を含む): 48281508

約数和(自身を除く): 27122132

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 137, 196, 197, 274, 392, 394, 548, 784, 788, 959, 1096, 1379, 1576, 1918, 2192, 2758, 3152, 3836, 5516, 6713, 7672, 9653, 11032, 13426, 15344, 19306, 22064, 26852, 26989, 38612, 53704, 53978, 77224, 107408, 107956, 154448, 188923, 215912, 377846, 431824, 755692, 1322461, 1511384, 2644922, 3022768, 5289844, 10579688, 21159376]

約数ペア:

[(1, 21159376), (2, 10579688), (4, 5289844), (7, 3022768), (8, 2644922), (14, 1511384), (16, 1322461), (28, 755692), (49, 431824), (56, 377846), (98, 215912), (112, 188923), (137, 154448), (196, 107956), (197, 107408), (274, 77224), (392, 53978), (394, 53704), (548, 38612), (784, 26989), (788, 26852), (959, 22064), (1096, 19306), (1379, 15344), (1576, 13426), (1918, 11032), (2192, 9653), (2758, 7672), (3152, 6713), (3836, 5516)]