20542781931

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{163}}^1\times {\mathrm{263}}^1\times {\mathrm{1201}}^1$

素因数の和:1656

約数の個数: 64

約数和(自身を含む): 33306746880

約数和(自身を除く): 12763964949

約数列:

[1, 3, 7, 19, 21, 57, 133, 163, 263, 399, 489, 789, 1141, 1201, 1841, 3097, 3423, 3603, 4997, 5523, 8407, 9291, 14991, 21679, 22819, 25221, 34979, 42869, 65037, 68457, 104937, 128607, 159733, 195763, 300083, 315863, 479199, 587289, 814511, 900249, 947589, 1370341, 2211041, 2443533, 3719497, 4111023, 5701577, 6001397, 6633123, 11158491, 17104731, 18004191, 26036479, 42009779, 51485669, 78109437, 126029337, 154457007, 360399683, 978227711, 1081199049, 2934683133, 6847593977, 20542781931]

約数ペア:

[(1, 20542781931), (3, 6847593977), (7, 2934683133), (19, 1081199049), (21, 978227711), (57, 360399683), (133, 154457007), (163, 126029337), (263, 78109437), (399, 51485669), (489, 42009779), (789, 26036479), (1141, 18004191), (1201, 17104731), (1841, 11158491), (3097, 6633123), (3423, 6001397), (3603, 5701577), (4997, 4111023), (5523, 3719497), (8407, 2443533), (9291, 2211041), (14991, 1370341), (21679, 947589), (22819, 900249), (25221, 814511), (34979, 587289), (42869, 479199), (65037, 315863), (68457, 300083), (104937, 195763), (128607, 159733)]