20621601

素因数分解:

$3^3\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1$

素因数の和:156

約数の個数: 96

約数和(自身を含む): 42134400

約数和(自身を除く): 21512799

約数列:

[1, 3, 7, 9, 11, 13, 21, 27, 33, 39, 49, 63, 77, 91, 99, 109, 117, 143, 147, 189, 231, 273, 297, 327, 351, 429, 441, 539, 637, 693, 763, 819, 981, 1001, 1199, 1287, 1323, 1417, 1617, 1911, 2079, 2289, 2457, 2943, 3003, 3597, 3861, 4251, 4851, 5341, 5733, 6867, 7007, 8393, 9009, 9919, 10791, 12753, 14553, 15587, 16023, 17199, 20601, 21021, 25179, 27027, 29757, 32373, 38259, 46761, 48069, 58751, 63063, 69433, 75537, 89271, 109109, 140283, 144207, 176253, 189189, 208299, 226611, 267813, 327327, 420849, 528759, 624897, 763763, 981981, 1586277, 1874691, 2291289, 2945943, 6873867, 20621601]

約数ペア:

[(1, 20621601), (3, 6873867), (7, 2945943), (9, 2291289), (11, 1874691), (13, 1586277), (21, 981981), (27, 763763), (33, 624897), (39, 528759), (49, 420849), (63, 327327), (77, 267813), (91, 226611), (99, 208299), (109, 189189), (117, 176253), (143, 144207), (147, 140283), (189, 109109), (231, 89271), (273, 75537), (297, 69433), (327, 63063), (351, 58751), (429, 48069), (441, 46761), (539, 38259), (637, 32373), (693, 29757), (763, 27027), (819, 25179), (981, 21021), (1001, 20601), (1199, 17199), (1287, 16023), (1323, 15587), (1417, 14553), (1617, 12753), (1911, 10791), (2079, 9919), (2289, 9009), (2457, 8393), (2943, 7007), (3003, 6867), (3597, 5733), (3861, 5341), (4251, 4851)]