21810855

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{61}}^1\times {\mathrm{197}}^1$

素因数の和:288

約数の個数: 48

約数和(自身を含む): 39184992

約数和(自身を除く): 17374137

約数列:

[1, 3, 5, 11, 15, 33, 55, 61, 121, 165, 183, 197, 305, 363, 591, 605, 671, 915, 985, 1815, 2013, 2167, 2955, 3355, 6501, 7381, 10065, 10835, 12017, 22143, 23837, 32505, 36051, 36905, 60085, 71511, 110715, 119185, 132187, 180255, 357555, 396561, 660935, 1454057, 1982805, 4362171, 7270285, 21810855]

約数ペア:

[(1, 21810855), (3, 7270285), (5, 4362171), (11, 1982805), (15, 1454057), (33, 660935), (55, 396561), (61, 357555), (121, 180255), (165, 132187), (183, 119185), (197, 110715), (305, 71511), (363, 60085), (591, 36905), (605, 36051), (671, 32505), (915, 23837), (985, 22143), (1815, 12017), (2013, 10835), (2167, 10065), (2955, 7381), (3355, 6501)]