81139443

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{139}}^1$

素因数の和:205

約数の個数: 72

約数和(自身を含む): 145938240

約数和(自身を除く): 64798797

約数列:

[1, 3, 7, 11, 19, 21, 33, 49, 57, 77, 133, 139, 147, 209, 231, 361, 399, 417, 539, 627, 931, 973, 1083, 1463, 1529, 1617, 2527, 2641, 2793, 2919, 3971, 4389, 4587, 6811, 7581, 7923, 10241, 10703, 11913, 17689, 18487, 20433, 27797, 29051, 30723, 32109, 50179, 53067, 55461, 74921, 83391, 87153, 129409, 150537, 194579, 203357, 224763, 351253, 388227, 551969, 583737, 610071, 1053759, 1423499, 1655907, 2458771, 3863783, 4270497, 7376313, 11591349, 27046481, 81139443]

約数ペア:

[(1, 81139443), (3, 27046481), (7, 11591349), (11, 7376313), (19, 4270497), (21, 3863783), (33, 2458771), (49, 1655907), (57, 1423499), (77, 1053759), (133, 610071), (139, 583737), (147, 551969), (209, 388227), (231, 351253), (361, 224763), (399, 203357), (417, 194579), (539, 150537), (627, 129409), (931, 87153), (973, 83391), (1083, 74921), (1463, 55461), (1529, 53067), (1617, 50179), (2527, 32109), (2641, 30723), (2793, 29051), (2919, 27797), (3971, 20433), (4389, 18487), (4587, 17689), (6811, 11913), (7581, 10703), (7923, 10241)]