20520156

素因数分解:

$2^2\times 3^1\times {\mathrm{17}}^2\times {\mathrm{61}}^1\times {\mathrm{97}}^1$

素因数の和:199

約数の個数: 72

約数和(自身を含む): 52229296

約数和(自身を除く): 31709140

約数列:

[1, 2, 3, 4, 6, 12, 17, 34, 51, 61, 68, 97, 102, 122, 183, 194, 204, 244, 289, 291, 366, 388, 578, 582, 732, 867, 1037, 1156, 1164, 1649, 1734, 2074, 3111, 3298, 3468, 4148, 4947, 5917, 6222, 6596, 9894, 11834, 12444, 17629, 17751, 19788, 23668, 28033, 35258, 35502, 52887, 56066, 70516, 71004, 84099, 100589, 105774, 112132, 168198, 201178, 211548, 301767, 336396, 402356, 603534, 1207068, 1710013, 3420026, 5130039, 6840052, 10260078, 20520156]

約数ペア:

[(1, 20520156), (2, 10260078), (3, 6840052), (4, 5130039), (6, 3420026), (12, 1710013), (17, 1207068), (34, 603534), (51, 402356), (61, 336396), (68, 301767), (97, 211548), (102, 201178), (122, 168198), (183, 112132), (194, 105774), (204, 100589), (244, 84099), (289, 71004), (291, 70516), (366, 56066), (388, 52887), (578, 35502), (582, 35258), (732, 28033), (867, 23668), (1037, 19788), (1156, 17751), (1164, 17629), (1649, 12444), (1734, 11834), (2074, 9894), (3111, 6596), (3298, 6222), (3468, 5917), (4148, 4947)]