21000974409

素因数分解:

$3^6\times {\mathrm{61}}^1\times {\mathrm{472261}}^1$

素因数の和:472340

約数の個数: 28

約数和(自身を含む): 32003306692

約数和(自身を除く): 11002332283

約数列:

[1, 3, 9, 27, 61, 81, 183, 243, 549, 729, 1647, 4941, 14823, 44469, 472261, 1416783, 4250349, 12751047, 28807921, 38253141, 86423763, 114759423, 259271289, 344278269, 777813867, 2333441601, 7000324803, 21000974409]

約数ペア:

[(1, 21000974409), (3, 7000324803), (9, 2333441601), (27, 777813867), (61, 344278269), (81, 259271289), (183, 114759423), (243, 86423763), (549, 38253141), (729, 28807921), (1647, 12751047), (4941, 4250349), (14823, 1416783), (44469, 472261)]