21491323203

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{347}}^1\times {\mathrm{41539}}^1$

素因数の和:41967

約数の個数: 32

約数和(自身を含む): 33306439680

約数和(自身を除く): 11815116477

約数列:

[1, 3, 7, 21, 71, 213, 347, 497, 1041, 1491, 2429, 7287, 24637, 41539, 73911, 124617, 172459, 290773, 517377, 872319, 2949269, 8847807, 14414033, 20644883, 43242099, 61934649, 100898231, 302694693, 1023396343, 3070189029, 7163774401, 21491323203]

約数ペア:

[(1, 21491323203), (3, 7163774401), (7, 3070189029), (21, 1023396343), (71, 302694693), (213, 100898231), (347, 61934649), (497, 43242099), (1041, 20644883), (1491, 14414033), (2429, 8847807), (7287, 2949269), (24637, 872319), (41539, 517377), (73911, 290773), (124617, 172459)]