21264656

素因数分解:

$2^4\times 7^1\times {\mathrm{29}}^1\times {\mathrm{6547}}^1$

素因数の和:6591

約数の個数: 40

約数和(自身を含む): 48717120

約数和(自身を除く): 27452464

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 29, 56, 58, 112, 116, 203, 232, 406, 464, 812, 1624, 3248, 6547, 13094, 26188, 45829, 52376, 91658, 104752, 183316, 189863, 366632, 379726, 733264, 759452, 1329041, 1518904, 2658082, 3037808, 5316164, 10632328, 21264656]

約数ペア:

[(1, 21264656), (2, 10632328), (4, 5316164), (7, 3037808), (8, 2658082), (14, 1518904), (16, 1329041), (28, 759452), (29, 733264), (56, 379726), (58, 366632), (112, 189863), (116, 183316), (203, 104752), (232, 91658), (406, 52376), (464, 45829), (812, 26188), (1624, 13094), (3248, 6547)]