21755937

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{149}}^1\times {\mathrm{409}}^1$

素因数の和:585

約数の個数: 32

約数和(自身を含む): 35424000

約数和(自身を除く): 13668063

約数列:

[1, 3, 7, 17, 21, 51, 119, 149, 357, 409, 447, 1043, 1227, 2533, 2863, 3129, 6953, 7599, 8589, 17731, 20859, 48671, 53193, 60941, 146013, 182823, 426587, 1035997, 1279761, 3107991, 7251979, 21755937]

約数ペア:

[(1, 21755937), (3, 7251979), (7, 3107991), (17, 1279761), (21, 1035997), (51, 426587), (119, 182823), (149, 146013), (357, 60941), (409, 53193), (447, 48671), (1043, 20859), (1227, 17731), (2533, 8589), (2863, 7599), (3129, 6953)]