20956155

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{241}}^1$

素因数の和:308

約数の個数: 64

約数和(自身を含む): 40144896

約数和(自身を除く): 19188741

約数列:

[1, 3, 5, 11, 15, 17, 31, 33, 51, 55, 85, 93, 155, 165, 187, 241, 255, 341, 465, 527, 561, 723, 935, 1023, 1205, 1581, 1705, 2635, 2651, 2805, 3615, 4097, 5115, 5797, 7471, 7905, 7953, 12291, 13255, 17391, 20485, 22413, 28985, 37355, 39765, 45067, 61455, 82181, 86955, 112065, 127007, 135201, 225335, 246543, 381021, 410905, 635035, 676005, 1232715, 1397077, 1905105, 4191231, 6985385, 20956155]

約数ペア:

[(1, 20956155), (3, 6985385), (5, 4191231), (11, 1905105), (15, 1397077), (17, 1232715), (31, 676005), (33, 635035), (51, 410905), (55, 381021), (85, 246543), (93, 225335), (155, 135201), (165, 127007), (187, 112065), (241, 86955), (255, 82181), (341, 61455), (465, 45067), (527, 39765), (561, 37355), (723, 28985), (935, 22413), (1023, 20485), (1205, 17391), (1581, 13255), (1705, 12291), (2635, 7953), (2651, 7905), (2805, 7471), (3615, 5797), (4097, 5115)]