20682721612

素因数分解:

$2^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{257}}^1\times {\mathrm{77681}}^1$

素因数の和:77986

約数の個数: 48

約数和(自身を含む): 42649282368

約数和(自身を除く): 21966560756

約数列:

[1, 2, 4, 7, 14, 28, 37, 74, 148, 257, 259, 514, 518, 1028, 1036, 1799, 3598, 7196, 9509, 19018, 38036, 66563, 77681, 133126, 155362, 266252, 310724, 543767, 1087534, 2175068, 2874197, 5748394, 11496788, 19964017, 20119379, 39928034, 40238758, 79856068, 80477516, 139748119, 279496238, 558992476, 738668629, 1477337258, 2954674516, 5170680403, 10341360806, 20682721612]

約数ペア:

[(1, 20682721612), (2, 10341360806), (4, 5170680403), (7, 2954674516), (14, 1477337258), (28, 738668629), (37, 558992476), (74, 279496238), (148, 139748119), (257, 80477516), (259, 79856068), (514, 40238758), (518, 39928034), (1028, 20119379), (1036, 19964017), (1799, 11496788), (3598, 5748394), (7196, 2874197), (9509, 2175068), (19018, 1087534), (38036, 543767), (66563, 310724), (77681, 266252), (133126, 155362)]