28950920

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{127}}^1\times {\mathrm{139}}^1$

素因数の和:318

約数の個数: 64

約数和(自身を含む): 67737600

約数和(自身を除く): 38786680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 127, 139, 164, 205, 254, 278, 328, 410, 508, 556, 635, 695, 820, 1016, 1112, 1270, 1390, 1640, 2540, 2780, 5080, 5207, 5560, 5699, 10414, 11398, 17653, 20828, 22796, 26035, 28495, 35306, 41656, 45592, 52070, 56990, 70612, 88265, 104140, 113980, 141224, 176530, 208280, 227960, 353060, 706120, 723773, 1447546, 2895092, 3618865, 5790184, 7237730, 14475460, 28950920]

約数ペア:

[(1, 28950920), (2, 14475460), (4, 7237730), (5, 5790184), (8, 3618865), (10, 2895092), (20, 1447546), (40, 723773), (41, 706120), (82, 353060), (127, 227960), (139, 208280), (164, 176530), (205, 141224), (254, 113980), (278, 104140), (328, 88265), (410, 70612), (508, 56990), (556, 52070), (635, 45592), (695, 41656), (820, 35306), (1016, 28495), (1112, 26035), (1270, 22796), (1390, 20828), (1640, 17653), (2540, 11398), (2780, 10414), (5080, 5699), (5207, 5560)]