20996949904

素因数分解:

$2^4\times 7^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1\times {\mathrm{35419}}^1$

素因数の和:35580

約数の個数: 80

約数和(自身を含む): 47785830400

約数和(自身を除く): 26788880496

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 67, 79, 112, 134, 158, 268, 316, 469, 536, 553, 632, 938, 1072, 1106, 1264, 1876, 2212, 3752, 4424, 5293, 7504, 8848, 10586, 21172, 35419, 37051, 42344, 70838, 74102, 84688, 141676, 148204, 247933, 283352, 296408, 495866, 566704, 592816, 991732, 1983464, 2373073, 2798101, 3966928, 4746146, 5596202, 9492292, 11192404, 16611511, 18984584, 19586707, 22384808, 33223022, 37969168, 39173414, 44769616, 66446044, 78346828, 132892088, 156693656, 187472767, 265784176, 313387312, 374945534, 749891068, 1312309369, 1499782136, 2624618738, 2999564272, 5249237476, 10498474952, 20996949904]

約数ペア:

[(1, 20996949904), (2, 10498474952), (4, 5249237476), (7, 2999564272), (8, 2624618738), (14, 1499782136), (16, 1312309369), (28, 749891068), (56, 374945534), (67, 313387312), (79, 265784176), (112, 187472767), (134, 156693656), (158, 132892088), (268, 78346828), (316, 66446044), (469, 44769616), (536, 39173414), (553, 37969168), (632, 33223022), (938, 22384808), (1072, 19586707), (1106, 18984584), (1264, 16611511), (1876, 11192404), (2212, 9492292), (3752, 5596202), (4424, 4746146), (5293, 3966928), (7504, 2798101), (8848, 2373073), (10586, 1983464), (21172, 991732), (35419, 592816), (37051, 566704), (42344, 495866), (70838, 296408), (74102, 283352), (84688, 247933), (141676, 148204)]