20181491631

素因数分解:

$3^3\times 7^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{22447}}^1$

素因数の和:22601

約数の個数: 64

約数和(自身を含む): 35169730560

約数和(自身を除く): 14988238929

約数列:

[1, 3, 7, 9, 21, 27, 63, 67, 71, 189, 201, 213, 469, 497, 603, 639, 1407, 1491, 1809, 1917, 4221, 4473, 4757, 12663, 13419, 14271, 22447, 33299, 42813, 67341, 99897, 128439, 157129, 202023, 299691, 471387, 606069, 899073, 1414161, 1503949, 1593737, 4242483, 4511847, 4781211, 10527643, 11156159, 13535541, 14343633, 31582929, 33468477, 40606623, 43030899, 94748787, 100405431, 106780379, 284246361, 301216293, 320341137, 747462653, 961023411, 2242387959, 2883070233, 6727163877, 20181491631]

約数ペア:

[(1, 20181491631), (3, 6727163877), (7, 2883070233), (9, 2242387959), (21, 961023411), (27, 747462653), (63, 320341137), (67, 301216293), (71, 284246361), (189, 106780379), (201, 100405431), (213, 94748787), (469, 43030899), (497, 40606623), (603, 33468477), (639, 31582929), (1407, 14343633), (1491, 13535541), (1809, 11156159), (1917, 10527643), (4221, 4781211), (4473, 4511847), (4757, 4242483), (12663, 1593737), (13419, 1503949), (14271, 1414161), (22447, 899073), (33299, 606069), (42813, 471387), (67341, 299691), (99897, 202023), (128439, 157129)]