21841456

素因数分解:

$2^4\times 7^2\times {\mathrm{13}}^1\times {\mathrm{2143}}^1$

素因数の和:2178

約数の個数: 60

約数和(自身を含む): 53038272

約数和(自身を除く): 31196816

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 49, 52, 56, 91, 98, 104, 112, 182, 196, 208, 364, 392, 637, 728, 784, 1274, 1456, 2143, 2548, 4286, 5096, 8572, 10192, 15001, 17144, 27859, 30002, 34288, 55718, 60004, 105007, 111436, 120008, 195013, 210014, 222872, 240016, 390026, 420028, 445744, 780052, 840056, 1365091, 1560104, 1680112, 2730182, 3120208, 5460364, 10920728, 21841456]

約数ペア:

[(1, 21841456), (2, 10920728), (4, 5460364), (7, 3120208), (8, 2730182), (13, 1680112), (14, 1560104), (16, 1365091), (26, 840056), (28, 780052), (49, 445744), (52, 420028), (56, 390026), (91, 240016), (98, 222872), (104, 210014), (112, 195013), (182, 120008), (196, 111436), (208, 105007), (364, 60004), (392, 55718), (637, 34288), (728, 30002), (784, 27859), (1274, 17144), (1456, 15001), (2143, 10192), (2548, 8572), (4286, 5096)]