17723727

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1$

素因数の和:240

約数の個数: 48

約数和(自身を含む): 30888000

約数和(自身を除く): 13164273

約数列:

[1, 3, 7, 9, 21, 29, 63, 87, 89, 109, 203, 261, 267, 327, 609, 623, 763, 801, 981, 1827, 1869, 2289, 2581, 3161, 5607, 6867, 7743, 9483, 9701, 18067, 22127, 23229, 28449, 29103, 54201, 66381, 67907, 87309, 162603, 199143, 203721, 281329, 611163, 843987, 1969303, 2531961, 5907909, 17723727]

約数ペア:

[(1, 17723727), (3, 5907909), (7, 2531961), (9, 1969303), (21, 843987), (29, 611163), (63, 281329), (87, 203721), (89, 199143), (109, 162603), (203, 87309), (261, 67907), (267, 66381), (327, 54201), (609, 29103), (623, 28449), (763, 23229), (801, 22127), (981, 18067), (1827, 9701), (1869, 9483), (2289, 7743), (2581, 6867), (3161, 5607)]