18816128

素因数分解:

$2^7\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{137}}^1$

素因数の和:217

約数の個数: 64

約数和(自身を含む): 40116600

約数和(自身を除く): 21300472

約数列:

[1, 2, 4, 8, 16, 29, 32, 37, 58, 64, 74, 116, 128, 137, 148, 232, 274, 296, 464, 548, 592, 928, 1073, 1096, 1184, 1856, 2146, 2192, 2368, 3712, 3973, 4292, 4384, 4736, 5069, 7946, 8584, 8768, 10138, 15892, 17168, 17536, 20276, 31784, 34336, 40552, 63568, 68672, 81104, 127136, 137344, 147001, 162208, 254272, 294002, 324416, 508544, 588004, 648832, 1176008, 2352016, 4704032, 9408064, 18816128]

約数ペア:

[(1, 18816128), (2, 9408064), (4, 4704032), (8, 2352016), (16, 1176008), (29, 648832), (32, 588004), (37, 508544), (58, 324416), (64, 294002), (74, 254272), (116, 162208), (128, 147001), (137, 137344), (148, 127136), (232, 81104), (274, 68672), (296, 63568), (464, 40552), (548, 34336), (592, 31784), (928, 20276), (1073, 17536), (1096, 17168), (1184, 15892), (1856, 10138), (2146, 8768), (2192, 8584), (2368, 7946), (3712, 5069), (3973, 4736), (4292, 4384)]