20958015455

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{137}}^1\times {\mathrm{1277}}^1$

素因数の和:1548

約数の個数: 64

約数和(自身を含む): 29036568960

約数和(自身を除く): 8078553505

約数列:

[1, 5, 13, 19, 65, 95, 97, 137, 247, 485, 685, 1235, 1261, 1277, 1781, 1843, 2603, 6305, 6385, 8905, 9215, 13015, 13289, 16601, 23959, 24263, 33839, 66445, 83005, 119795, 121315, 123869, 169195, 172757, 174949, 252491, 315419, 619345, 863785, 874745, 1262455, 1577095, 1610297, 2274337, 2353511, 3282383, 3324031, 8051485, 11371685, 11767555, 16411915, 16620155, 16970053, 30595643, 43212403, 84850265, 152978215, 216062015, 220610689, 322431007, 1103053445, 1612155035, 4191603091, 20958015455]

約数ペア:

[(1, 20958015455), (5, 4191603091), (13, 1612155035), (19, 1103053445), (65, 322431007), (95, 220610689), (97, 216062015), (137, 152978215), (247, 84850265), (485, 43212403), (685, 30595643), (1235, 16970053), (1261, 16620155), (1277, 16411915), (1781, 11767555), (1843, 11371685), (2603, 8051485), (6305, 3324031), (6385, 3282383), (8905, 2353511), (9215, 2274337), (13015, 1610297), (13289, 1577095), (16601, 1262455), (23959, 874745), (24263, 863785), (33839, 619345), (66445, 315419), (83005, 252491), (119795, 174949), (121315, 172757), (123869, 169195)]