338268520

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{167}}^1\times {\mathrm{641}}^1$

素因数の和:898

約数の個数: 64

約数和(自身を含む): 776563200

約数和(自身を除く): 438294680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 167, 316, 334, 395, 632, 641, 668, 790, 835, 1282, 1336, 1580, 1670, 2564, 3160, 3205, 3340, 5128, 6410, 6680, 12820, 13193, 25640, 26386, 50639, 52772, 65965, 101278, 105544, 107047, 131930, 202556, 214094, 253195, 263860, 405112, 428188, 506390, 527720, 535235, 856376, 1012780, 1070470, 2025560, 2140940, 4281880, 8456713, 16913426, 33826852, 42283565, 67653704, 84567130, 169134260, 338268520]

約数ペア:

[(1, 338268520), (2, 169134260), (4, 84567130), (5, 67653704), (8, 42283565), (10, 33826852), (20, 16913426), (40, 8456713), (79, 4281880), (158, 2140940), (167, 2025560), (316, 1070470), (334, 1012780), (395, 856376), (632, 535235), (641, 527720), (668, 506390), (790, 428188), (835, 405112), (1282, 263860), (1336, 253195), (1580, 214094), (1670, 202556), (2564, 131930), (3160, 107047), (3205, 105544), (3340, 101278), (5128, 65965), (6410, 52772), (6680, 50639), (12820, 26386), (13193, 25640)]