21761488

素因数分解:

$2^4\times 7^2\times {\mathrm{41}}^1\times {\mathrm{677}}^1$

素因数の和:740

約数の個数: 60

約数和(自身を含む): 50317092

約数和(自身を除く): 28555604

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 41, 49, 56, 82, 98, 112, 164, 196, 287, 328, 392, 574, 656, 677, 784, 1148, 1354, 2009, 2296, 2708, 4018, 4592, 4739, 5416, 8036, 9478, 10832, 16072, 18956, 27757, 32144, 33173, 37912, 55514, 66346, 75824, 111028, 132692, 194299, 222056, 265384, 388598, 444112, 530768, 777196, 1360093, 1554392, 2720186, 3108784, 5440372, 10880744, 21761488]

約数ペア:

[(1, 21761488), (2, 10880744), (4, 5440372), (7, 3108784), (8, 2720186), (14, 1554392), (16, 1360093), (28, 777196), (41, 530768), (49, 444112), (56, 388598), (82, 265384), (98, 222056), (112, 194299), (164, 132692), (196, 111028), (287, 75824), (328, 66346), (392, 55514), (574, 37912), (656, 33173), (677, 32144), (784, 27757), (1148, 18956), (1354, 16072), (2009, 10832), (2296, 9478), (2708, 8036), (4018, 5416), (4592, 4739)]