21504392

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{271}}^1$

素因数の和:406

約数の個数: 64

約数和(自身を含む): 50265600

約数和(自身を除く): 28761208

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 109, 182, 218, 271, 364, 436, 542, 728, 763, 872, 1084, 1417, 1526, 1897, 2168, 2834, 3052, 3523, 3794, 5668, 6104, 7046, 7588, 9919, 11336, 14092, 15176, 19838, 24661, 28184, 29539, 39676, 49322, 59078, 79352, 98644, 118156, 197288, 206773, 236312, 384007, 413546, 768014, 827092, 1536028, 1654184, 2688049, 3072056, 5376098, 10752196, 21504392]

約数ペア:

[(1, 21504392), (2, 10752196), (4, 5376098), (7, 3072056), (8, 2688049), (13, 1654184), (14, 1536028), (26, 827092), (28, 768014), (52, 413546), (56, 384007), (91, 236312), (104, 206773), (109, 197288), (182, 118156), (218, 98644), (271, 79352), (364, 59078), (436, 49322), (542, 39676), (728, 29539), (763, 28184), (872, 24661), (1084, 19838), (1417, 15176), (1526, 14092), (1897, 11336), (2168, 9919), (2834, 7588), (3052, 7046), (3523, 6104), (3794, 5668)]